"Autobiographies of great nations are written in three manuscripts – a book of deeds, a book of words, and a book of art. Of the three, I would choose the latter as truest testimony." - Sir Kenneth Smith, Great Civilisations

"I must write each day without fail, not so much for the success of the work, as in order not to get out of my routine." - Leo Tolstoy

I have never believed that one should wait until one is inspired because I think the pleasures of not writing are so great that if you ever start indulging them you will never write again. - John Updike

"The life of every man is a diary in which he means to write one story, and writes another; and his humblest hour is when he compares the volume as it is with what he vowed to make it." - J.M. Barrie, Peter Pan

Poetry is the shadow cast by our streetlight imaginations." - Lawrence Ferlinghetti


[Note - If any article requires updating or correction please notate this in the comment section. Thank you. - res]


Showing posts with label J. Robert Oppenheimer. Show all posts
Showing posts with label J. Robert Oppenheimer. Show all posts

Monday, August 22, 2022

J. Robert Oppenheimer - "Now I am become Death, the Destroyer of Worlds"

"Now I am become Death, the Destroyer of Worlds." - J. Robert Oppenheimer

“Robert Oppenheimer was a complex human being. No biography yet written comes even close to this elegant skein of poems in capturing his life and character.”―Richard Rhodes, author of the Pulitzer Prize–winning The Making of the Atomic Bomb 


Oppenheimer: The Man Behind the Bomb
A "Countdown to Zero" Exclusive
TakePart  |  Jul 16, 2010

On July 16, 1945, the U.S. government tested their first nuclear bomb, led by J. Robert Oppenheimer. As the blast went off, Oppenheimer became aware not only the terrifying power of the nuclear bomb but also our inability to entirely comprehend the implications of this invention. His attempts to warn the public were silenced and ridiculed, though today, over 65 years later, his voice is a haunting reminder of our very real nuclear threat.






Plutonium and poetry: Where Trinity and
Oppenheimer's reading habits met

By Patty Templeton, digital archivist, National Security Research Center
July 14, 2021

The Lab’s first director, J. Robert Oppenheimer, was a man of sonnets and scientific synthesis.

Oppenheimer’s work at Los Alamos was defined not only by physics and administrative skill, but also by a life philosophy inspired, in part, by literature. The Trinity test, which took place 76 years ago on July 16 in the New Mexico desert, epitomizes this.

Known as one of the greatest scientific achievements ever, the successful detonation of the world’s first nuclear weapon marked the dawn of the Atomic Age. Created in just 27, albeit harrowing, months, Oppenheimer and his team at the Los Alamos Lab worked nonstop on this clandestine effort to help end World War II.

As he had done throughout his life, Oppenheimer continued to foster his love of literature during the Manhattan Project. Two of his influences were John Donne and the Hindu scripture "Bhagavad-Gita." Oppenheimer recalled both during the Trinity test.

John Donne and Trinity

Seventeenth-century poet John Donne was one of Oppenheimer’s favorite writers and an inspiration during his work with the Manhattan Project.

In 1962, Manhattan Project leader Gen. Leslie Groves wrote to Oppenheimer to ask about the origins of the name Trinity. According to a copy of the letter that is a part of the collections of the Lab’s National Security Research Center, Oppenheimer said, “Why I chose the name is not clear, but I know what thoughts were in my mind. There is a poem of John Donne, written just before his death, which I know and love.” Oppenheimer then quoted the sonnet “Hymn to God, My God, in My Sickness” about a man unafraid to die because he believed in resurrection.

Oppenheimer continued, “That still does not make a Trinity, but in another, better known devotional poem Donne opens, ‘Batter my heart, three person’d God.’ Beyond this, I have no clues whatever.”

“Batter my heart” expresses the paradox that by being chained to God, the narrator can be set free. A great force could enthrall the narrator to do greater good. Richard Rhodes, who wrote the book "The Making of the Atomic Bomb," proposed that “the bomb for [physicist Niels] Bohr and Oppenheimer was a weapon of death that might also end war and redeem mankind.”

Bhagavad-Gita and the Bomb

Oppenheimer’s copy of "Bhagavad-Gita," translated by Arthur W. Ryder, is part of the collections at the Lab’s Bradbury Science Museum in Los Alamos. Oppenheimer’s handwritten initials appear in the upper right corner of the front endpapers. The book is just one of two of his personal items that the Lab owns, the other being his office chair.

Oppenheimer’s copy of "Bhagavad-Gita," translated by Arthur W. Ryder, is part of the collections at the Lab’s Bradbury Science Museum in Los Alamos. Oppenheimer’s handwritten initials appear in the upper right corner of the front endpapers. The book is just one of two of his personal items that the Lab owns, the other being his office chair.

Oppenheimer wanted to read the "Bhagavad-Gita" in the original Sanskrit, which is the primary sacred language of Hinduism. So, as a professor at Berkeley before his time at Los Alamos, he sat in on Sanskrit classes with Arthur W. Ryder, who had published an English translation of the "Bhagavad-Gita". It was a book Oppenheimer would gift to colleagues and friends for the rest of his life.

The "Bhagavad-Gita" expresses a life structured by action. One should detach from desired outcomes and work. The poetic Hindu text is a conversation between Prince Arjuna and the deity Lord Vishnu. Arjuna is anguished at the idea of slaying friends and cousins in war. Vishnu convinces Arjuna to disregard emotional attachments and fear of mistakes. To uphold dharma, the power which upholds the cosmos and society, Arjuna must do his duty, which is fight.

Preparing for Trinity, Oppenheimer’s thoughts were on the success of the test and the impact of the bomb on his life and the world. Vannevar Bush, the director of the Office of Scientific Research and Development (OSRD) and chairman of the National Defense Research Committee (NDRC), said of Oppenheimer in his 1970 memoir, "Pieces of the Action": “I simply record a poem, which [Oppenheimer] translated from the Sanscrit [sic], and which he recited to me two nights before [Trinity]:
In battle, in forest, at the precipice in the mountains,
On the dark great sea, in the midst of javelins and arrows,
In sleep, in confusion, in the depths of shame,
The good deeds a man has done before defend him."

As proposed by historian James A. Hijiya in “The ‘Gita’ of J. Robert Oppenheimer,” Oppenheimer believed, “It was the duty of the scientists to build the bomb, but it was the duty of the statesman to decide whether or how to use it.”

Though Oppenheimer never publicly ascribed to the Hindu faith, he regularly quoted the "Bhagavad-Gita." Most notably, upon seeing the Trinity detonation, Oppenheimer was said to have recalled the line, “Now I am become Death, the destroyer of worlds.” The quote, however, has been widely misinterpreted, according to historian Alex Wellerstein, who explains in his blog:

“Oppenheimer is not Krishna/Vishnu, not the terrible god, not the ‘destroyer of worlds’ — he is Arjuna, the human prince! He is the one who didn’t really want to kill his brothers, his fellow people. But he has been enjoined to battle by something bigger than himself — physics, fission, the atomic bomb, World War II, what have you — and only at the moment when it truly reveals its nature, the Trinity test, does he fully see why he, a man who hates war, is compelled to battle. It is the bomb that is here for destruction. Oppenheimer is merely the man who is witnessing it.”


Finding meaning

Poetry was ever-present in Oppenheimer’s letter writing and in his reactions to current events. We know that, according to the book "American Prometheus," by Kai Bird and Martin J. Sherwin, before the Trinity test, late at night in the base camp mess hall, Oppenheimer sipped coffee, rolled smokes and read French poet Charles Baudelaire.

T.S. Eliot, a poet Oppenheimer admired and hosted later as the director of the Institute for Advanced Study, famously wrote:

“Do I dare
Disturb the universe?”

Oppenheimer surely did.

Oppenheimer the writer

Oppenheimer was a creative writer — and his own worst critic. While studying at Harvard and Cambridge universities, Oppenheimer wrote prose in imitation of Russian playwright Anton Chekhov and poetry in search of himself. In a 1924 letter to Herbert Smith, his high school English teacher, Oppenheimer said his writing wasn’t “…meant or fit for anyone's perusal.” The only poem of note published by Oppenheimer was “Crossing.” The poem appeared in the summer 1928 issue of the Hound & Horn.

Crossing

It was evening when we came to the river with a low moon over the desert that we had lost in the mountains, forgotten, what with the cold and the sweating and the ranges barring the sky.

And when we found it again, in the dry hills down by the river, half withered, we had the hot winds against us.

There were two palms by the landing; the yuccas were flowering; there was a light on the far shore, and tamarisks.

We waited a long time, in silence.

Then we heard the oars creaking and afterwards, I remember, the boatman called to us.

We did not look back at the mountains.

Oppenheimer’s reading list

In 1963, Oppenheimer was asked by The Christian Century magazine what books shaped his “vocational attitude” and his “philosophy on life.”

Here is Oppenheimer’s (unranked) list:
  • "Les Fleurs du Mal (The Flowers of Evil)" by Charles Baudelaire
  • “The Waste Land” by T.S. Eliot
  • “The Divine Comedy” by Dante Alighieri
  • "Bhagavad-Gita"
  • “Śatakatraya” (“The Three Centuries”) by Bhartrihari
  • Hamlet by William Shakespeare "
  • L'Éducation Sentimentale (Sentimental Education)" by Gustave Flaubert
  • "The Collected Works of Bernhard Riemann" by Bernhard Riemann
  • "Theaetetus" by Plato
  • Scientist Michael Faraday’s notebooks (Alternately named "Faraday’s Diary, Being the Various Philosophical Notes of Experimental Investigation made by Michael Faraday")

LA-UR-21-26204



* * * * * * *



Battle, in forest, at the precipice in the mountains,

On the dark great sea, in the midst of javelins and arrows,

In sleep, in confusion, in the depths of shame,

The good deeds a man has done before defend him.

Robert Oppenheimer



* * * * * * *



Amazon Link

Quartet for J. Robert Oppenheimer: A Poem
Paperback – February 1, 2017
by Kelly Cherry (Author)

Quartet for J. Robert Oppenheimer records in poetry the life and times of one of America’s best-known scientists, the father of the atomic bomb who later lobbied for containment of nuclear weaponry. In brief, elegant stanzas, Kelly Cherry examines Oppenheimer’s inspirations, dreams, and values, visiting the events, places, and people that inspired him or led him to despair. She finds his place among scientists of his own time, such as Alan Turing and Albert Einstein, as well as his connections with historical and mythological figures from John Donne to Persephone.
“Of course he had blood on his hands. Who did not?” says Cherry, in “The Nature of War.” Again and again in the course of this remarkable poem, Cherry’s narration of Oppenheimer’s life compels her readers to contemplate the vagaries of science, guilt, and our responsibilities to each other.

“Quartet for J. Robert Oppenheimer is a book length poem in which the architect of the atom bomb comes to embody America and the West’s Faustian control of nature and the paradoxical helplessness and guilt which that control entailed. Oppenheim is marvelous, complicated, flawed and admirable character, and these poems read like chapters in a novel without in any way abandoning the intensities of feeling and image or delight in language we associate with lyric poetry. A terrific achievement and a compelling read.”―Alan Shapiro, author of Life Pig and Reel to Reel

 


Amazon Link


American Prometheus: The Triumph and Tragedy of J. Robert Oppenheimer  |  Paperback – May 1, 2006
by Kai Bird (Author), Martin J. Sherwin (Author)
PULITZER PRIZE WINNER • The definitive biography of J. Robert Oppenheimer, one of the iconic figures of the twentieth century, a brilliant physicist who led the effort to build the atomic bomb for his country in a time of war, and who later found himself confronting the moral consequences of scientific progress.

In this magisterial, acclaimed biography twenty-five years in the making, Kai Bird and Martin Sherwin capture Oppenheimer’s life and times, from his early career to his central role in the Cold War. This is biography and history at its finest, riveting and deeply informative.

“A masterful account of Oppenheimer’s rise and fall, set in the context of the turbulent decades of America’s own transformation. It is a tour de force.” —Los Angeles Times Book Review

“A work of voluminous scholarship and lucid insight, unifying its multifaceted portrait with a keen grasp of Oppenheimer’s essential nature.... It succeeds in deeply fathoming his most damaging, self-contradictory behavior.” —The New York Times








Poems to J. Robert Oppenheimer - HelloPoetry.com







"Destroyer of Worlds": The Making of an Atomic Bomb

At 5:29 a.m. (MST), the world’s first atomic bomb detonated in the New Mexican desert, releasing a level of destructive power unknown in the existence of humanity. Emitting as much energy as 21,000 tons of TNT and creating a fireball that measured roughly 2,000 feet in diameter, the first successful test of an atomic bomb, known as the Trinity Test, forever changed the history of the world.


Models of Fat Man and Little Boy on display at the Bradbury Science Museum
Los Alamos National Laboratory. Image courtesy of Los Alamos National Laboratory.


"We waited until the blast had passed, walked out of the shelter and then it was entirely solemn. We knew the world would not be the same. A few people laughed, a few people cried. Most people were silent." - J. Robert Oppenheimer

EARLY NUCLEAR RESEARCH

Achieving the monumental goal of splitting the nucleus of an atom, known as nuclear fission, came through the development of scientific discoveries that stretched over several centuries. Beginning in 1789, when German scientist Martin Klaproth discovered the dense, metallic element he called uranium, exploration of atomic energy and radiation came to fascinate scientific minds. As Marie Curie was conducting her groundbreaking research on uranium in the late nineteenth century, she found that the element was naturally radioactive. Curie created the term “radioactive” to describe the emission of electromagnetic particles from disintegrating atoms. Curie’s discovery of radioactivity in elements forever changed the nature of atomic science. Building from this research, British physicist Ernest Rutherford in 1911 formulated a model of the atom in which low-mass electrons orbited a charged nucleus that contained the bulk of the atom’s mass.

GERMAN DISCOVERY OF FISSION

The 1930s saw further development in the field. Hungarian-German physicist Leo Szilard conceived the possibility of self-sustaining nuclear fission reactions, or a nuclear chain reaction, in 1933. The following year, Italian physicist Enrico Fermi unknowingly split neutrons within uranium while conducting his own experiments. On the heels of these developments, Austrian-Swedish physicist Lise Meitner, working with German chemist Otto Hahn, was among the first to achieve the successful fission of uranium. However, the antisemitism of the Nazi party forced Meitner, who was Jewish, to flee and settle in Sweden. While in Sweden, Meitner identified and named the process of nuclear fission.

Meitner’s findings became a tipping point in the development of nuclear weapons, but as the world once more moved into war, it was the Germans who held the potential key to nuclear power. While Hahn chose to remain in Germany and continued to develop his research throughout World War II, scientists across Europe steadily fled. Szilard, a Jewish man, migrated to the United States in 1938 to avoid persecution. Fermi and his wife, Laura Capon, also left Europe at the end of 1938 to escape growing Fascism in Italy. Capon, who was also Jewish, traveled with Fermi to New York City where both applied for permanent residency.

THE UNITED STATES TAKES ACTION

When news of Hahn and Meitner’s discovery of fission reached Szilard in his New York City home in early 1939, Szilard began work to confirm their findings. Szilard found help in collaborator Walter Zinn, and together they recreated Hahn’s experiment. Recognizing the significance of that moment, Szilard stated, “That night, there was very little doubt in my mind that the world was headed for grief.” Szilard began to work with Fermi to construct a nuclear reactor at Columbia University, but as they did so, Szilard feared that scientists in Germany, who were aiding the Nazi war effort, were similarly constructing their own reactors.

In July 1939, Szilard contacted the prominent Jewish German theoretical physicist Albert Einstein at his home on Long Island, New York, to discuss German advances in nuclear development. Together, Szilard and Einstein drafted a letter to US President Franklin D. Roosevelt. In the letter, dated August 2, 1939, the warning was clear: “This new phenomenon would also lead to the construction of bombs, and it is conceivable—though much less certain—that extremely powerful bombs of a new type may thus be constructed.” The letter did not reach Roosevelt until October, but once he learned of the potential risks presented by nuclear weaponry, he responded by forming the Advisory Committee on Uranium, which held its first meeting on October 21, 1939.


Overhead shot of Fermi's Pile-1 experiment constructed beneath
Stagg Field at the Unversity of Chicago 1942. Image courtesy
of Los Alamos National Laboratory.


THE MANHATTAN PROJECT

Although formed in 1939, the Advisory Committee on Uranium moved slowly at first. However, Japan’s attack on Pearl Harbor on December 7, 1941, pushed the Committee into action. With the United States formally at war, the question of uranium development and the potential construction of an atomic bomb gained renewed interest. This interest rose even higher as a report issued by British scientists in March 1941 confirmed the possibility of building a uranium-based bomb, giving American scientists the validation they sought. In spite of this enthusiasm, the limitation of resources quickly became evident and prompted committee leaders to turn to the military for help.

As the United States began its island-hopping campaign in the Pacific, the Army Corps of Engineers took over the effort to produce atomic weaponry on the Home Front. On August 13, 1942, the Army Corps created the Manhattan Engineer District, named for the location of its offices in New York City. The following month, on September 17, Colonel Leslie R. Groves was appointed to head the project and received a promotion to Brigadier General. Within two days of his appointment, Groves made quick decisions to move the project forward, selecting three primary sites for the manufacture of an atomic bomb.

Groves first selected Oak Ridge, Tennessee, as the site for uranium enrichment. Also among the primary project sites was Los Alamos, New Mexico. Designated “Project Y,” Los Alamos was the site of the Manhattan Project’s weapons research laboratory. This Los Alamos site would become the location for the construction of the atomic bombs. The last primary site Groves selected was Hanford, Washington, which he designated to produce plutonium from the uranium isotope U-238. Though plutonium is not a naturally occurring element, scientists discovered its production within uranium reactors. Plutonium proved to be a more radioactive metal and had a higher possibility of achieving nuclear fission.

As Groves made these moves, a breakthrough in nuclear research beneath the squash courts at the University of Chicago created a model for the future production of atomic weapons.

Early in 1942, Fermi and Szilard, who had been working to build a reactor at the University of Columbia, moved their effort to Chicago. After construction was complete, on December 2 of that year, the scientists began removing the cadmium control rods from the uranium pile. Following the removal of the final control rod, the pile went critical. The resulting nuclear reaction became self-sustaining and continued at an increasing pace for a few minutes until Fermi ordered the reactor shut off. Although the reaction only produced enough energy to power a light bulb, this moment marked the first instance in history of a self-sustaining nuclear reaction. The event also gave nuclear scientists a model for the production of large amounts of plutonium, which would eventually become the basis of the B Reactor built at Hanford.

After receiving formal approval from President Roosevelt on December 28, 1942, the Manhattan Project developed into a massive undertaking that spread across the United States. With over 30 project sites and over 100,000 workers, the Manhattan Project came to cost approximately $2.2 billion. Even though encompassing such a massive scale, the project largely remained a secret, and many of the people working on the construction of the atomic bomb did not fully know the purpose behind their jobs. Following Fermi’s successful experiment in Chicago, there appeared to be two possible paths toward building atomic bombs: uranium and plutonium. The Manhattan Project built both kinds of bombs, ultimately resulting in the construction of Little Boy, a gun-method uranium bomb, and Fat Man, an implosion-method plutonium bomb.


Front face of the B Reactor Hanford. Image courtesy of United States Government.


The responsibility of bringing these bombs into existence fell to the man Groves selected to head the secret weapons laboratory at Los Alamos: J. Robert Oppenheimer. A theoretical physicist and professor of physics at the University of California, Berkeley, Oppenheimer became involved early in the scientific research that ultimately led to the Manhattan Project. Under Oppenheimer’s direction, Manhattan Project workers constructed a plutonium bomb.

The plutonium bomb relied upon the implosion of the reactive plutonium rather than on the piercing of the plutonium with a bullet, which was common in gun-method bombs and which worked better with uranium. While the gun-method was a more familiar method conceptually to its creators, the implosion-method was not. Due to the unprecedented nature of such a bomb, Oppenheimer felt a test was necessary. Groves initially hesitated because plutonium was both expensive and rare. However, Groves relented and approved moving forward with a test.

"The stuff will apparently be more powerful than we thought, the amount necessary appears to be less, the possibilities of actual production appear more certain." - Vannevar Bush to President Roosevelt, March 9, 1942

Expanding explosion from an atomic bomb test, New Mexico
16-Jul-45.  The National WWII Museum, 2012.019.741

"Now I am become death, the destroyer of worlds." - J. Robert Oppenheimer referencing a verse from the Bhagavad Gita

THE TRINITY TEST

Inspired by the seventeenth-century poet, John Donne, Oppenheimer came to call the test “Trinity.” Oppenheimer had been reading Donne’s Holy Sonnets before the test and found inspiration in the line from “Sonnet XIV,” which opens with the line, “Batter my heart, three-person'd God.” The test took place at Alamogordo, New Mexico, rather than at Los Alamos. Hundreds of Manhattan Project workers moved in to prepare the Alamogordo site which was located 200 miles south of the Project Y site. The test bomb, nicknamed Gadget, contained 13 pounds of plutonium, as well as the implosion-method of detonation. Using a steel tower, scientists hoisted and suspended Gadget 100 feet into the air, and at 5:29 a.m. on July 16, 1945, the Trinity Test began. The test proved far more successful than Oppenheimer anticipated. He had expected an explosion equivalent to .3 kilotons of TNT; instead, the resulting blast equated to roughly 21 kilotons of TNT.

The flash from the bomb was so bright that it temporarily blinded observers standing 10,000 yards away. The heat from the bomb was so intense that it evaporated the steel tower, left a crater five feet deep by 30 feet wide, and melted the sand in the area, creating a mildly radioactive green glass called “trinitite.” Upon witnessing the blast, Oppenheimer famously uttered a line from the Bhagavad Gita, “Now I am become Death, the destroyer of worlds.”


Bockscar flies over Nagaski as a mushroom cloud
rises  in the background 9-Aug-45. Image
courtesy  of Los Alamos National Laboratory.

CONCLUSION

The success of the Trinity Test exceeded the expectations of Groves and most of the scientists involved in the Manhattan Project. The day after the test, Roosevelt’s successor, President Harry Truman, traveled to the Potsdam Conference where he received word of the Trinity Test’s success. Truman used the results as leverage to demand Japan’s unconditional surrender, which Japanese officials opted to ignore. The discovery and harnessing of atomic energy not only served to bring World War II to a rapid and fiery end, but it also placed the United States in a position of global power not held by any other nation following the war’s end. From the race to keep such power out of Nazi hands and to the use of atomic bombs on Japan to end the war, the Manhattan Project pushed humanity across the threshold into a new atomic age that forever altered the nature of conflict and the fear of global warfare.



* * * * * * * *


J. Robert Oppenheimer

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J. Robert Oppenheimer
Head and shoulders portrait
Oppenheimer, c. 1944
BornApril 22, 1904
DiedFebruary 18, 1967 (aged 62)
EducationHarvard College
Christ's College, Cambridge
University of Göttingen
Known forNuclear weapons development
Tolman–Oppenheimer–Volkoff equation
Tolman–Oppenheimer–Volkoff limit
Oppenheimer–Phillips process
Born–Oppenheimer approximation
Spouse(s)
(m. 1940)
Children2
AwardsEnrico Fermi Award (1963)
Scientific career
FieldsTheoretical physics
InstitutionsUniversity of California, Berkeley
California Institute of Technology
Los Alamos Laboratory
Institute for Advanced Study
ThesisZur Quantentheorie kontinuierlicher Spektren[1] (1927)
Doctoral advisorMax Born
Doctoral studentsSamuel W. Alderson
David Bohm
Robert Christy
Sidney Dancoff
Stan Frankel
Willis Eugene Lamb
Harold Lewis
Philip Morrison
Arnold Nordsieck
Melba Phillips
Hartland Snyder
George Volkoff
Signature
J Robert Oppenheimer signature.svg
Notes
Brother of physicist Frank Oppenheimer

J. Robert Oppenheimer[note 1] (/ˈɒpənˌhmər/; April 22, 1904 – February 18, 1967) was an American theoretical physicist. A professor of physics at the University of California, Berkeley, Oppenheimer was the wartime head of the Los Alamos Laboratory and is often credited as the "father of the atomic bomb" for his role in the Manhattan Project – the World War II undertaking that developed the first nuclear weapons. Oppenheimer was among those who observed the Trinity test in New Mexico, where the first atomic bomb was successfully detonated on July 16, 1945. He later remarked that the explosion brought to mind words from the Bhagavad Gita: "Now I am become Death, the destroyer of worlds."[2][note 2] In August 1945, the weapons were used in the atomic bombings of Hiroshima and Nagasaki.

After the war ended, Oppenheimer became chairman of the influential General Advisory Committee of the newly created United States Atomic Energy Commission. He used that position to lobby for international control of nuclear power to avert nuclear proliferation and a nuclear arms race with the Soviet Union. He opposed the development of the hydrogen bomb during a 1949–1950 governmental debate on the question and subsequently took stances on defense-related issues that provoked the ire of some factions in the U.S. government and military. During the Second Red Scare, those stances, together with past associations Oppenheimer had with people and organizations affiliated with the Communist Party, led to him suffering the revocation of his security clearance in a much-written-about hearing in 1954. Effectively stripped of his direct political influence, he continued to lecture, write, and work in physics. Nine years later, President John F. Kennedy awarded (and Lyndon B. Johnson presented) him with the Enrico Fermi Award as a gesture of political rehabilitation.

Oppenheimer's achievements in physics included the Born–Oppenheimer approximation for molecular wave functions, work on the theory of electrons and positrons, the Oppenheimer–Phillips process in nuclear fusion, and the first prediction of quantum tunneling. With his students he also made important contributions to the modern theory of neutron stars and black holes, as well as to quantum mechanicsquantum field theory, and the interactions of cosmic rays. As a teacher and promoter of science, he is remembered as a founding father of the American school of theoretical physics that gained world prominence in the 1930s. After World War II, he became director of the Institute for Advanced Study in Princeton, New Jersey.

Early life

Childhood and education

J. Robert Oppenheimer was born in New York City on April 22, 1904,[note 1][7] to Ella (née Friedman), a painter, and Julius Seligmann Oppenheimer, a wealthy textile importer. Born in HanauHesse-NassauPrussiaGermany, Julius came to the United States as a teenager in 1888 with little resources, no money, no baccalaureate studies, and no knowledge of the English language. He was hired by a textile company and within a decade was an executive there, eventually becoming wealthy.[8] The Oppenheimers were both secular Ashkenazi Jews; his father was German Jewish, and his mother, who was from New York, descended from a German Jewish family that had lived in the U.S. since the 1840s.[9] In 1912, the family moved to an apartment on the 11th floor of 155 Riverside Drive, near West 88th Street, Manhattan, an area known for luxurious mansions and townhouses.[7] Their art collection included works by Pablo Picasso and Édouard Vuillard, and at least three original paintings by Vincent van Gogh.[10] Robert had a younger brother, Frank, who also became a physicist.[11]

Oppenheimer was initially educated at Alcuin Preparatory School; in 1911, he entered the Ethical Culture Society School.[12] This had been founded by Felix Adler to promote a form of ethical training based on the Ethical Culture movement, whose motto was "Deed before Creed". His father had been a member of the Society for many years, serving on its board of trustees from 1907 to 1915.[13] Oppenheimer was a versatile scholar, interested in English and French literature, and particularly in mineralogy.[14] He completed the third and fourth grades in one year and skipped half of the eighth grade.[12] During his final year, he became interested in chemistry.[15] He entered Harvard College one year after graduation, at age 18, because he suffered an attack of colitis while prospecting in Joachimstal during a family summer vacation in Europe. To help him recover from the illness, his father enlisted the help of his English teacher Herbert Smith who took him to New Mexico, where Oppenheimer fell in love with horseback riding and the southwestern United States.[16]

Oppenheimer majored in chemistry, but Harvard required science students to also study history, literature, and philosophy or mathematics. He compensated for his late start by taking six courses each term and was admitted to the undergraduate honor society Phi Beta Kappa. In his first year, he was admitted to graduate standing in physics on the basis of independent study, which meant he was not required to take the basic classes and could enroll instead in advanced ones. He was attracted to experimental physics by a course on thermodynamics that was taught by Percy Bridgman. He graduated summa cum laude in three years.[17]

Studies in Europe

Fifteen men in suits, and one woman, pose for a group photograph
Heike Kamerlingh Onnes' Laboratory in Leiden, Netherlands, 1926. Oppenheimer is in the middle row, second from the left.

In 1924, Oppenheimer was informed that he had been accepted into Christ's College, Cambridge. He wrote to Ernest Rutherford requesting permission to work at the Cavendish Laboratory. Bridgman provided Oppenheimer with a recommendation, which conceded that Oppenheimer's clumsiness in the laboratory made it apparent his forte was not experimental but rather theoretical physics. Rutherford was unimpressed, but Oppenheimer went to Cambridge in the hope of landing another offer.[18] He was ultimately accepted by J. J. Thomson on condition that he complete a basic laboratory course.[19] He developed an antagonistic relationship with his tutor, Patrick Blackett, who was only a few years his senior. While on vacation, as recalled by his friend Francis Fergusson, Oppenheimer once confessed that he had left an apple doused with noxious chemicals on Blackett's desk. While Fergusson's account is the only detailed version of this event, Oppenheimer's parents were alerted by the university authorities who considered placing him on probation, a fate prevented by his parents successfully lobbying the authorities.[20]

Oppenheimer was a tall, thin chain smoker,[21] who often neglected to eat during periods of intense thought and concentration. Many of his friends described him as having self-destructive tendencies. A disturbing event occurred when he took a vacation from his studies in Cambridge to meet up with Fergusson in Paris. Fergusson noticed that Oppenheimer was not well. To help distract him from his depression, Fergusson told Oppenheimer that he (Fergusson) was to marry his girlfriend Frances Keeley. Oppenheimer did not take the news well. He jumped on Fergusson and tried to strangle him. Although Fergusson easily fended off the attack, the episode convinced him of Oppenheimer's deep psychological troubles. Throughout his life, Oppenheimer was plagued by periods of depression,[22][23] and he once told his brother, "I need physics more than friends".[24]

In 1926, Oppenheimer left Cambridge for the University of Göttingen to study under Max Born. Göttingen was one of the world's leading centers for theoretical physics. Oppenheimer made friends who went on to great success, including Werner HeisenbergPascual JordanWolfgang PauliPaul DiracEnrico Fermi and Edward Teller. He was known for being too enthusiastic in discussion, sometimes to the point of taking over seminar sessions.[25] This irritated some of Born's other students so much that Maria Goeppert presented Born with a petition signed by herself and others threatening a boycott of the class unless he made Oppenheimer quiet down. Born left it out on his desk where Oppenheimer could read it, and it was effective without a word being said.[26]

He obtained his Doctor of Philosophy degree in March 1927 at age 23, supervised by Born.[27] After the oral exam, James Franck, the professor administering, reportedly said, "I'm glad that's over. He was on the point of questioning me."[4] Oppenheimer published more than a dozen papers at Göttingen, including many important contributions to the new field of quantum mechanics. He and Born published a famous paper on the Born–Oppenheimer approximation, which separates nuclear motion from electronic motion in the mathematical treatment of molecules, allowing nuclear motion to be neglected to simplify calculations. It remains his most cited work.[28]

Early professional work

Educational work

Oppenheimer was awarded a United States National Research Council fellowship to the California Institute of Technology (Caltech) in September 1927. Bridgman also wanted him at Harvard, so a compromise was reached whereby he split his fellowship for the 1927–28 academic year between Harvard in 1927 and Caltech in 1928.[29] At Caltech he struck up a close friendship with Linus Pauling, and they planned to mount a joint attack on the nature of the chemical bond, a field in which Pauling was a pioneer, with Oppenheimer supplying the mathematics and Pauling interpreting the results. Both the collaboration and their friendship ended when Pauling began to suspect Oppenheimer of becoming too close to his wife, Ava Helen Pauling. Once, when Pauling was at work, Oppenheimer had arrived at their home and invited Ava Helen to join him on a tryst in Mexico. Though she refused and reported the incident to her husband,[30] the invitation, and her apparent nonchalance about it, disquieted Pauling and he ended his relationship with Oppenheimer. Oppenheimer later invited him to become head of the Chemistry Division of the Manhattan Project, but Pauling refused, saying he was a pacifist.[31]

In the autumn of 1928, Oppenheimer visited Paul Ehrenfest's institute at the University of Leiden, the Netherlands, where he impressed by giving lectures in Dutch, despite having little experience with the language. There he was given the nickname of Opje,[32] later anglicized by his students as "Oppie".[33] From Leiden he continued on to the Swiss Federal Institute of Technology (ETH) in Zurich to work with Wolfgang Pauli on quantum mechanics and the continuous spectrum. Oppenheimer respected and liked Pauli and may have emulated his personal style as well as his critical approach to problems.[34]

Greek style buildings and a clock tower
The University of California, Berkeley, where Oppenheimer taught from 1929 to 1943

On returning to the United States, Oppenheimer accepted an associate professorship from the University of California, Berkeley, where Raymond T. Birge wanted him so badly that he expressed a willingness to share him with Caltech.[31]

Before he began his Berkeley professorship, Oppenheimer was diagnosed with a mild case of tuberculosis and spent some weeks with his brother Frank at a New Mexico ranch, which he leased and eventually purchased. When he heard the ranch was available for lease, he exclaimed, "Hot dog!", and later called it Perro Caliente, literally "hot dog" in Spanish.[35] Later he used to say that "physics and desert country" were his "two great loves".[36] He recovered from tuberculosis and returned to Berkeley, where he prospered as an advisor and collaborator to a generation of physicists who admired him for his intellectual virtuosity and broad interests. His students and colleagues saw him as mesmerizing: hypnotic in private interaction, but often frigid in more public settings. His associates fell into two camps: one that saw him as an aloof and impressive genius and aesthete, the other that saw him as a pretentious and insecure poseur.[37] His students almost always fell into the former category, adopting his walk, speech, and other mannerisms, and even his inclination for reading entire texts in their original languages.[38] Hans Bethe said of him:

Probably the most important ingredient he brought to his teaching was his exquisite taste. He always knew what were the important problems, as shown by his choice of subjects. He truly lived with those problems, struggling for a solution, and he communicated his concern to the group. In its heyday, there were about eight or ten graduate students in his group and about six Post-doctoral Fellows. He met this group once a day in his office and discussed with one after another the status of the student's research problem. He was interested in everything, and in one afternoon they might discuss quantum electrodynamics, cosmic rays, electron pair production and nuclear physics.[39]

He worked closely with Nobel Prize-winning experimental physicist Ernest O. Lawrence and his cyclotron pioneers, helping them understand the data their machines were producing at the Lawrence Berkeley National Laboratory.[40] In 1936, Berkeley promoted him to full professor at a salary of $3,300 a year (equivalent to $64,000 in 2021). In return he was asked to curtail his teaching at Caltech, so a compromise was reached whereby Berkeley released him for six weeks each year, enough to teach one term at Caltech.[41]

Scientific work

Oppenheimer did important research in theoretical astronomy (especially as related to general relativity and nuclear theory), nuclear physicsspectroscopy, and quantum field theory, including its extension into quantum electrodynamics. The formal mathematics of relativistic quantum mechanics also attracted his attention, although he doubted its validity. His work predicted many later finds, which include the neutronmeson and neutron star.[42]

Initially, his major interest was the theory of the continuous spectrum and his first published paper, in 1926, concerned the quantum theory of molecular band spectra. He developed a method to carry out calculations of its transition probabilities. He calculated the photoelectric effect for hydrogen and X-rays, obtaining the absorption coefficient at the K-edge. His calculations accorded with observations of the X-ray absorption of the sun, but not helium. Years later it was realized that the sun was largely composed of hydrogen and that his calculations were indeed correct.[43][44]

Einstein writing at a desk. Oppenheimer sits beside him, looking on.
Physicists Albert Einstein and Oppenheimer conferring circa 1950

Oppenheimer also made important contributions to the theory of cosmic ray showers and started work that eventually led to descriptions of quantum tunneling. In 1931, he co-wrote a paper on the "Relativistic Theory of the Photoelectric Effect" with his student Harvey Hall,[45] in which, based on empirical evidence, he correctly disputed Dirac's assertion that two of the energy levels of the hydrogen atom have the same energy. Subsequently, one of his doctoral students, Willis Lamb, determined that this was a consequence of what became known as the Lamb shift, for which Lamb was awarded the Nobel Prize in physics in 1955.[42]

With his first doctoral student, Melba Phillips, Oppenheimer worked on calculations of artificial radioactivity under bombardment by deuterons. When Ernest Lawrence and Edwin McMillan bombarded nuclei with deuterons they found the results agreed closely with the predictions of George Gamow, but when higher energies and heavier nuclei were involved, the results did not conform to the theory. In 1935, Oppenheimer and Phillips worked out a theory—now known as the Oppenheimer–Phillips process—to explain the results; this theory is still in use today.[46]

As early as 1930, Oppenheimer wrote a paper that essentially predicted the existence of the positron. This was after a paper by Paul Dirac proposed that electrons could have both a positive charge and negative energy. Dirac's paper introduced an equation, known as the Dirac equation, which unified quantum mechanics, special relativity and the then-new concept of electron spin, to explain the Zeeman effect.[47] Oppenheimer, drawing on the body of experimental evidence, rejected the idea that the predicted positively charged electrons were protons. He argued that they would have to have the same mass as an electron, whereas experiments showed that protons were much heavier than electrons. Two years later, Carl David Anderson discovered the positron, for which he received the 1936 Nobel Prize in Physics.[48]

In the late 1930s, Oppenheimer became interested in astrophysics, most likely through his friendship with Richard Tolman, resulting in a series of papers. In the first of these, a 1938 paper co-written with Robert Serber entitled "On the Stability of Stellar Neutron Cores",[49] Oppenheimer explored the properties of white dwarfs. This was followed by a paper co-written with one of his students, George Volkoff, "On Massive Neutron Cores",[50] in which they demonstrated that there was a limit, the so-called Tolman–Oppenheimer–Volkoff limit, to the mass of stars beyond which they would not remain stable as neutron stars and would undergo gravitational collapse. Finally, in 1939, Oppenheimer and another of his students, Hartland Snyder, produced a paper "On Continued Gravitational Contraction",[51] which predicted the existence of what are today known as black holes. After the Born–Oppenheimer approximation paper, these papers remain his most cited, and were key factors in the rejuvenation of astrophysical research in the United States in the 1950s, mainly by John A. Wheeler.[52]

Oppenheimer's papers were considered difficult to understand even by the standards of the abstract topics he was expert in. He was fond of using elegant, if extremely complex, mathematical techniques to demonstrate physical principles, though he was sometimes criticized for making mathematical mistakes, presumably out of haste. "His physics was good", said his student Snyder, "but his arithmetic awful".[42]

After World War II, Oppenheimer published only five scientific papers, one of which was in biophysics, and none after 1950. Murray Gell-Mann, a later Nobelist who, as a visiting scientist, worked with him at the Institute for Advanced Study in 1951, offered this opinion:

He didn't have Sitzfleisch, 'sitting flesh,' when you sit on a chair. As far as I know, he never wrote a long paper or did a long calculation, anything of that kind. He didn't have patience for that; his own work consisted of little aperçus, but quite brilliant ones. But he inspired other people to do things, and his influence was fantastic.[53]

Oppenheimer's diverse interests sometimes interrupted his focus on science. He liked things that were difficult, and since much of the scientific work appeared easy for him, he developed an interest in the mystical and the cryptic. In 1933, he learned Sanskrit and met the Indologist Arthur W. Ryder at Berkeley. He eventually read the Bhagavad Gita and the Upanishads in the original Sanskrit, and deeply pondered over them. He later cited the Gita as one of the books that most shaped his philosophy of life.[54][55]

His close confidant and colleague, Nobel Prize winner Isidor Rabi, later gave his own interpretation:

Oppenheimer was overeducated in those fields, which lie outside the scientific tradition, such as his interest in religion, in the Hindu religion in particular, which resulted in a feeling of mystery of the universe that surrounded him like a fog. He saw physics clearly, looking toward what had already been done, but at the border he tended to feel there was much more of the mysterious and novel than there actually was ... [he turned] away from the hard, crude methods of theoretical physics into a mystical realm of broad intuition.[56]

In spite of this, observers such as Nobel Prize-winning physicist Luis Alvarez have suggested that if he had lived long enough to see his predictions substantiated by experiment, Oppenheimer might have won a Nobel Prize for his work on gravitational collapse, concerning neutron stars and black holes.[57][58] In retrospect, some physicists and historians consider this to be his most important contribution, though it was not taken up by other scientists in his own lifetime.[59] The physicist and historian Abraham Pais once asked Oppenheimer what he considered to be his most important scientific contributions; Oppenheimer cited his work on electrons and positrons, not his work on gravitational contraction.[60] Oppenheimer was nominated for the Nobel Prize for physics three times, in 1946, 1951 and 1967, but never won.[61][62]

Private and political life

During the 1920s, Oppenheimer remained uninformed on worldly matters. He claimed that he did not read newspapers or listen to the radio and had only learned of the Wall Street crash of 1929 while he was on a walk with Ernest Lawrence some six months after the crash occurred.[63] He once remarked that he never cast a vote until the 1936 presidential election. However, from 1934 on, he became increasingly concerned about politics and international affairs. In 1934, he earmarked three percent of his annual salary—about $100 (equivalent to $2,026 in 2021)—for two years to support German physicists fleeing from Nazi Germany. During the 1934 West Coast Waterfront Strike, he and some of his students, including Melba Phillips and Bob Serber, attended a longshoremen's rally. Oppenheimer repeatedly attempted to get Serber a position at Berkeley but was blocked by Birge, who felt that "one Jew in the department was enough".[64]

Mug shot with "K-6" over it and "J. R. Oppenheimer" typewritten below.
Oppenheimer's ID badge from the Los Alamos Laboratory

Oppenheimer's mother died in 1931, and he became closer to his father who, although still living in New York, became a frequent visitor in California.[65] When his father died in 1937 leaving $392,602 to be divided between Oppenheimer and his brother Frank, Oppenheimer immediately wrote out a will that left his estate to the University of California to be used for graduate scholarships.[66] Like many young intellectuals in the 1930s, he supported social reforms that were later alleged to be communist ideas. He donated to many progressive causes that were later branded as left-wing during the McCarthy era. The majority of his allegedly radical work consisted of hosting fundraisers for the Republican cause in the Spanish Civil War and other anti-fascist activity. He never openly joined the Communist Party USA (CPUSA), though he did pass money to leftist causes by way of acquaintances who were alleged to be Party members.[67] In 1936, Oppenheimer became involved with Jean Tatlock, the daughter of a Berkeley literature professor and a student at Stanford University School of Medicine. The two had similar political views; she wrote for the Western Worker, a Communist Party newspaper.[68]

Tatlock broke up with Oppenheimer in 1939, after a tempestuous relationship. In August of that year, he met Katherine ("Kitty") Puening, a radical Berkeley student and former Communist Party member. Kitty had been married before. Her first marriage lasted only a few months. Her second, common-law marriage husband was Joe Dallet, an active member of the Communist Party, who was killed in the Spanish Civil War.[69] Kitty returned to the United States where she obtained a Bachelor of Arts degree in botany from the University of Pennsylvania. There she married Richard Harrison, a physician and medical researcher, in 1938. In June 1939 Kitty and Harrison moved to Pasadena, California, where he became chief of radiology at a local hospital and she enrolled as a graduate student at the University of California, Los Angeles. Oppenheimer and Kitty created a minor scandal by sleeping together after one of Tolman's parties. In the summer of 1940, she stayed with Oppenheimer at his ranch in New Mexico. She finally asked Harrison for a divorce when she found out she was pregnant. When he refused, she obtained an instant divorce in Reno, Nevada, and took Oppenheimer as her fourth husband on November 1, 1940.[70]

Their first child Peter was born in May 1941,[71] and their second child, Katherine ("Toni"), was born in Los Alamos, New Mexico, on December 7, 1944.[70] During his marriage, Oppenheimer continued his affair with Jean Tatlock.[72] Later their continued contact became an issue in his security clearance hearings because of Tatlock's Communist associations.[73] Many of Oppenheimer's closest associates were active in the Communist Party in the 1930s or 1940s. They included his brother Frank, Frank's wife Jackie,[74] Kitty,[75] Jean Tatlock, his landlady Mary Ellen Washburn,[76] and several of his graduate students at Berkeley.[77]

When he joined the Manhattan Project in 1942, Oppenheimer wrote on his personal security questionnaire that he had been "a member of just about every Communist Front organization on the West Coast".[78] Years later he claimed that he did not remember saying this, that it was not true, and that if he had said anything along those lines, it was "a half-jocular overstatement".[79] He was a subscriber to the People's World,[80] a Communist Party organ, and he testified in 1954, "I was associated with the Communist movement."[81] From 1937 to 1942, Oppenheimer was a member at Berkeley of what he called a "discussion group", which was later identified by fellow members, Haakon Chevalier[82][83] and Gordon Griffiths, as a "closed" (secret) unit of the Communist Party for Berkeley faculty.[84]

The FBI opened a file on Oppenheimer in March 1941. It recorded that he attended a meeting in December 1940 at Chevalier's home that was also attended by the Communist Party's California state secretary William Schneiderman, and its treasurer Isaac Folkoff. The FBI noted that Oppenheimer was on the Executive Committee of the American Civil Liberties Union, which it considered a Communist front organization. Shortly thereafter, the FBI added Oppenheimer to its Custodial Detention Index, for arrest in case of national emergency.[85] Debates over Oppenheimer's Party membership or lack thereof have turned on very fine points; almost all historians agree he had strong left-wing views during this time and interacted with Party members, though there is considerable dispute over whether he was officially a member of the Party. At his 1954 security clearance hearings, he denied being a member of the Communist Party, but identified himself as a fellow traveler, which he defined as someone who agrees with many of the goals of Communism, but without being willing to blindly follow orders from any Communist party apparatus.[86]

Throughout the development of the atomic bomb, Oppenheimer was under investigation by both the FBI and the Manhattan Project's internal security arm for left-wing associations he was known to have had in the past. He was followed by Army security agents during a trip to California in June 1943 to visit his former girlfriend, Jean Tatlock, who was suffering from depression. Oppenheimer spent the night in her apartment.[87] Tatlock committed suicide on January 4, 1944, which left Oppenheimer deeply grieved.[88] In August 1943, he volunteered to Manhattan Project security agents that George Eltenton, whom he did not know, had solicited three men at Los Alamos for nuclear secrets on behalf of the Soviet Union. When pressed on the issue in later interviews, Oppenheimer admitted that the only person who had approached him was his friend Haakon Chevalier, a Berkeley professor of French literature, who had mentioned the matter privately at a dinner at Oppenheimer's house.[89] Brigadier General Leslie R. Groves, Jr., the director of the Manhattan Project, thought Oppenheimer was too important to the project to be ousted over this suspicious behavior. On July 20, 1943, he wrote to the Manhattan Engineer District:

In accordance with my verbal directions of July 15, it is desired that clearance be issued to Julius Robert Oppenheimer without delay irrespective of the information which you have concerning Mr Oppenheimer. He is absolutely essential to the project.[90]

Manhattan Project

Los Alamos

On October 9, 1941, two months before the United States entered World War II, President Franklin D. Roosevelt approved a crash program to develop an atomic bomb.[91] In May 1942, National Defense Research Committee Chairman James B. Conant, who had been one of Oppenheimer's lecturers at Harvard, invited Oppenheimer to take over work on fast neutron calculations, a task that Oppenheimer threw himself into with full vigor. He was given the title "Coordinator of Rapid Rupture", which specifically referred to the propagation of a fast neutron chain reaction in an atomic bomb. One of his first acts was to host a summer school for bomb theory at his building in Berkeley. The mix of European physicists and his own students—a group including Robert Serber, Emil KonopinskiFelix BlochHans Bethe and Edward Teller—kept themselves busy by calculating what needed to be done, and in what order, to make the bomb.[92]

Men in suits and uniforms stand on a dais decorated with bunting and salute.
Presentation of the Army-Navy "E" Award at Los Alamos on October 16, 1945. Oppenheimer (left) gave his farewell speech as director on this occasion. Robert Gordon Sproul right, in suit, accepted the award on behalf of the University of California from Leslie Groves (center).[93]

In June 1942, the US Army established the Manhattan Project to handle its part in the atom bomb project and began the process of transferring responsibility from the Office of Scientific Research and Development to the military.[94] In September, Groves was appointed director of what became known as the Manhattan Project.[95] He selected Oppenheimer to head the project's secret weapons laboratory. This was a choice that surprised many because Oppenheimer had left-wing political views and no record as a leader of large projects. Groves was concerned by the fact that Oppenheimer did not have a Nobel Prize and might not have had the prestige to direct fellow scientists.[96] However, he was impressed by Oppenheimer's singular grasp of the practical aspects of designing and constructing an atomic bomb, and by the breadth of his knowledge. As a military engineer, Groves knew that this would be vital in an interdisciplinary project that would involve not just physics, but chemistry, metallurgyordnance and engineering. Groves also detected in Oppenheimer something that many others did not, an "overweening ambition" that Groves reckoned would supply the drive necessary to push the project to a successful conclusion. Isidor Rabi considered the appointment "a real stroke of genius on the part of General Groves, who was not generally considered to be a genius".[97]

Oppenheimer and Groves decided that for security and cohesion they needed a centralized, secret research laboratory in a remote location. Scouting for a site in late 1942, Oppenheimer was drawn to New Mexico, not far from his ranch. On November 16, 1942, Oppenheimer, Groves and others toured a prospective site. Oppenheimer feared that the high cliffs surrounding the site would make his people feel claustrophobic, while the engineers were concerned with the possibility of flooding. He then suggested and championed a site that he knew well: a flat mesa near Santa Fe, New Mexico, which was the site of a private boys' school called the Los Alamos Ranch School. The engineers were concerned about the poor access road and the water supply but otherwise felt that it was ideal.[98] The Los Alamos Laboratory was built on the site of the school, taking over some of its buildings, while many new buildings were erected in great haste. At the laboratory, Oppenheimer assembled a group of the top physicists of the time, which he referred to as the "luminaries".[99]

Los Alamos was initially supposed to be a military laboratory, and Oppenheimer and other researchers were to be commissioned into the Army. He went so far as to order himself a lieutenant colonel's uniform and take the Army physical test, which he failed. Army doctors considered him underweight at 128 pounds (58 kg), diagnosed his chronic cough as tuberculosis and were concerned about his chronic lumbosacral joint pain.[100] The plan to commission scientists fell through when Robert Bacher and Isidor Rabi balked at the idea. Conant, Groves, and Oppenheimer devised a compromise whereby the laboratory was operated by the University of California under contract to the War Department.[101] It soon turned out that Oppenheimer had hugely underestimated the magnitude of the project; Los Alamos grew from a few hundred people in 1943 to over 6,000 in 1945.[100]

Oppenheimer at first had difficulty with the organizational division of large groups, but rapidly learned the art of large-scale administration after he took up permanent residence on the mesa. He was noted for his mastery of all scientific aspects of the project and for his efforts to control the inevitable cultural conflicts between scientists and the military. He was an iconic figure to his fellow scientists, as much a symbol of what they were working toward as a scientific director. Victor Weisskopf put it thus:

Oppenheimer directed these studies, theoretical and experimental, in the real sense of the words. Here his uncanny speed in grasping the main points of any subject was a decisive factor; he could acquaint himself with the essential details of every part of the work. He did not direct from the head office. He was intellectually and physically present at each decisive step. He was present in the laboratory or in the seminar rooms, when a new effect was measured, when a new idea was conceived. It was not that he contributed so many ideas or suggestions; he did so sometimes, but his main influence came from something else. It was his continuous and intense presence, which produced a sense of direct participation in all of us; it created that unique atmosphere of enthusiasm and challenge that pervaded the place throughout its time.[102]

At this point in the war, there was considerable anxiety among the scientists that the Germans might be making faster progress on an atomic weapon than they were.[103][104] In a letter dated May 25, 1943, Oppenheimer responded to a proposal from Fermi to use radioactive materials to poison German food supplies. Oppenheimer asked Fermi whether he could produce enough strontium without letting too many in on the secret. Oppenheimer continued, "I think we should not attempt a plan unless we can poison food sufficient to kill a half a million men."[105]

A group of men in shirtsleeves sitting on folding chairs.
A group of physicists at the 1946 Los Alamos colloquium on the Super. In the front row are Norris BradburyJohn ManleyEnrico Fermi and J.M.B. Kellogg. Behind Manley is Oppenheimer (wearing jacket and tie), and to his left is Richard Feynman. The army colonel on the far left is Oliver Haywood. In the third row between Haywood and Oppenheimer is Edward Teller.

In 1943 development efforts were directed to a plutonium gun-type fission weapon called "Thin Man". Initial research on the properties of plutonium was done using cyclotron-generated plutonium-239, which was extremely pure but could only be created in tiny amounts. When Los Alamos received the first sample of plutonium from the X-10 Graphite Reactor in April 1944 a problem was discovered: reactor-bred plutonium had a higher concentration of plutonium-240, making it unsuitable for use in a gun-type weapon.[106] In July 1944, Oppenheimer abandoned the gun design in favor of an implosion-type weapon. Using chemical explosive lenses, a sub-critical sphere of fissile material could be squeezed into a smaller and denser form. The metal needed to travel only very short distances, so the critical mass would be assembled in much less time.[107] In August 1944 Oppenheimer implemented a sweeping reorganization of the Los Alamos laboratory to focus on implosion.[108] He concentrated the development efforts on the gun-type device, a simpler design that only had to work with uranium-235, in a single group, and this device became Little Boy in February 1945.[109] After a mammoth research effort, the more complex design of the implosion device, known as the "Christy gadget" after Robert Christy, another student of Oppenheimer's,[110] was finalized in a meeting in Oppenheimer's office on February 28, 1945.[111]

In May 1945 an Interim Committee was created to advise and report on wartime and postwar policies regarding the use of nuclear energy. The Interim Committee in turn established a scientific panel consisting of Arthur Compton, Fermi, Lawrence and Oppenheimer to advise it on scientific issues. In its presentation to the Interim Committee, the scientific panel offered its opinion not just on the likely physical effects of an atomic bomb, but on its likely military and political impact.[112] This included opinions on such sensitive issues as whether or not the Soviet Union should be advised of the weapon in advance of its use against Japan.[113]

Trinity

The Trinity test of the Manhattan Project was the first detonation of a nuclear device.[114]

The joint work of the scientists at Los Alamos resulted in the world's first nuclear explosion, near Alamogordo, New Mexico, on July 16, 1945. Oppenheimer had given the site the codename "Trinity" in mid-1944 and said later that it was from one of John Donne's Holy Sonnets. According to the historian Gregg Herken, this naming could have been an allusion to Jean Tatlock, who had committed suicide a few months previously and had in the 1930s introduced Oppenheimer to Donne's work.[115]

Oppenheimer later recalled that, while witnessing the explosion, he thought of a verse from the Bhagavad Gita (XI,12): divi sūrya-sahasrasya bhaved yugapad utthitā yadi bhāḥ sadṛṥī sā syād bhāsas tasya mahātmanaḥ[116]

If the radiance of a thousand suns were to burst at once into the sky, that would be like the splendor of the mighty one ...[5][117]

Years later he would explain that another verse had also entered his head at that time: namely, the famous verse: "kālo'smi lokakṣayakṛtpravṛddho lokānsamāhartumiha pravṛttaḥ" (XI,32),[118] which he translated as "I am become Death, the destroyer of worlds."[note 2]

In 1965, when he was persuaded to quote again for a television broadcast, he said:

We knew the world would not be the same. A few people laughed, a few people cried. Most people were silent. I remembered the line from the Hindu scripture, the Bhagavad Gita; Vishnu is trying to persuade the Prince that he should do his duty and, to impress him, takes on his multi-armed form and says, 'Now I am become Death, the destroyer of worlds.' I suppose we all thought that, one way or another.[3]

Among those present with Oppenheimer in the control bunker at the site were his brother Frank and Brigadier General Thomas Farrell. When Jeremy Bernstein asked Frank what Robert's first words after the test had been, the answer was "I guess it worked."[119] Farrell summarized Robert's reaction as follows:

Dr. Oppenheimer, on whom had rested a very heavy burden, grew tenser as the last seconds ticked off. He scarcely breathed. He held on to a post to steady himself. For the last few seconds, he stared directly ahead and then when the announcer shouted "Now!" and there came this tremendous burst of light followed shortly thereafter by the deep growling roar of the explosion, his face relaxed into an expression of tremendous relief.[120]

Physicist Isidor Rabi noticed Oppenheimer's disconcerting triumphalism: "I'll never forget his walk; I'll never forget the way he stepped out of the car ... his walk was like High Noon ... this kind of strut. He had done it."[121] At an assembly at Los Alamos on August 6 (the evening of the atomic bombing of Hiroshima), Oppenheimer took to the stage and clasped his hands together "like a prize-winning boxer" while the crowd cheered. He noted his regret the weapon had not been available in time to use against Nazi Germany.[122] However, he and many of the project staff were very upset about the bombing of Nagasaki, as they did not feel the second bomb was necessary from a military point of view.[123] He traveled to Washington on August 17 to hand-deliver a letter to Secretary of War Henry L. Stimson expressing his revulsion and his wish to see nuclear weapons banned.[124] In October 1945 Oppenheimer was granted an interview with President Harry S. Truman. The meeting, however, went badly, after Oppenheimer remarked he felt he had "blood on my hands". The remark infuriated Truman and put an end to the meeting. Truman later told his Undersecretary of State Dean Acheson "I don't want to see that son-of-a-bitch in this office ever again."[125]

For his services as director of Los Alamos, Oppenheimer was awarded the Medal for Merit from President Harry S. Truman in 1946.[126]

Postwar activities

Oppenheimer's Van Gogh, Enclosed Field with Rising Sun (1889).[127]

The Manhattan Project was top secret and did not become public knowledge until after the bombings of Hiroshima and Nagasaki, and Oppenheimer became a national spokesman for science who was emblematic of a new type of technocratic power.[88] He became a household name and his portrait appeared on the covers of Life and Time.[128][129] Nuclear physics became a powerful force as all governments of the world began to realize the strategic and political power that came with nuclear weapons. Like many scientists of his generation, he felt that security from atomic bombs would come only from a transnational organization such as the newly formed United Nations, which could institute a program to stifle a nuclear arms race.[130]

Institute for Advanced Study

In November 1945, Oppenheimer left Los Alamos to return to Caltech,[131] but he soon found that his heart was no longer in teaching.[132] In 1947, he accepted an offer from Lewis Strauss to take up the directorship of the Institute for Advanced Study in Princeton, New Jersey. This meant moving back east and leaving Ruth Tolman, the wife of his friend Richard Tolman, with whom he had begun an affair after leaving Los Alamos.[133] The job came with a salary of $20,000 per annum, plus rent-free accommodation in the director's house, a 17th-century manor with a cook and groundskeeper, surrounded by 265 acres (107 ha) of woodlands.[134] He collected European furniture, and French post-impressionist and Fauvist artworks. His art collection included works by CézanneDerainDespiaude Vlaminck, Picasso, RembrandtRenoir, Van Gogh and Vuillard.[135]

Oppenheimer brought together intellectuals at the height of their powers and from a variety of disciplines to answer the most pertinent questions of the age. He directed and encouraged the research of many well-known scientists, including Freeman Dyson, and the duo of Chen Ning Yang and Tsung-Dao Lee, who won a Nobel Prize for their discovery of parity non-conservation. He also instituted temporary memberships for scholars from the humanities, such as T. S. Eliot and George F. Kennan. Some of these activities were resented by a few members of the mathematics faculty, who wanted the institute to stay a bastion of pure scientific research. Abraham Pais said that Oppenheimer himself thought that one of his failures at the institute was being unable to bring together scholars from the natural sciences and the humanities.[136]

During a series of conferences in New York from 1947 through 1949, physicists switched back from war work to theoretical issues. Under Oppenheimer's direction, physicists tackled the greatest outstanding problem of the pre-war years: infinite, divergent, and non-sensical expressions in the quantum electrodynamics of elementary particlesJulian SchwingerRichard Feynman and Shin'ichiro Tomonaga tackled the problem of regularization, and developed techniques which became known as renormalization. Freeman Dyson was able to prove that their procedures gave similar results. The problem of meson absorption and Hideki Yukawa's theory of mesons as the carrier particles of the strong nuclear force were also tackled. Probing questions from Oppenheimer prompted Robert Marshak's innovative two-meson hypothesis: that there were actually two types of mesons, pions and muons. This led to Cecil Frank Powell's breakthrough and subsequent Nobel Prize for the discovery of the pion.[137][note 3]

Atomic Energy Commission

A man in a suit seated, smoking a cigarette.
Oppenheimer in 1946 with his trademark cigarette

As a member of the Board of Consultants to a committee appointed by Truman, Oppenheimer strongly influenced the Acheson–Lilienthal Report. In this report, the committee advocated the creation of an international Atomic Development Authority, which would own all fissionable material and the means of its production, such as mines and laboratories, and atomic power plants where it could be used for peaceful energy production. Bernard Baruch was appointed to translate this report into a proposal to the United Nations, resulting in the Baruch Plan of 1946. The Baruch Plan introduced many additional provisions regarding enforcement, in particular requiring inspection of the Soviet Union's uranium resources. The Baruch Plan was seen as an attempt to maintain the United States' nuclear monopoly and was rejected by the Soviets. With this, it became clear to Oppenheimer that an arms race was unavoidable, due to the mutual suspicion of the United States and the Soviet Union,[139] which even Oppenheimer was starting to distrust.[140]

After the Atomic Energy Commission (AEC) came into being in 1947 as a civilian agency in control of nuclear research and weapons issues, Oppenheimer was appointed as the Chairman of its General Advisory Committee (GAC). From this position he advised on a number of nuclear-related issues, including project funding, laboratory construction and even international policy—though the GAC's advice was not always heeded.[141] As Chairman of the GAC, Oppenheimer lobbied vigorously for international arms control and funding for basic science, and attempted to influence policy away from a heated arms race.[142]

The first atomic bomb test by the Soviet Union in August 1949 came earlier than expected by Americans, and over the next several months there was an intense debate within the U.S. government, military, and scientific communities regarding whether to proceed with the development of the far more powerful, nuclear fusion-based hydrogen bomb, then known as "the Super".[143] Oppenheimer had been aware of the possibility of a thermonuclear weapon since the days of the Manhattan Project and had allocated a limited amount of theoretical research work toward the possibility at the time but nothing more than that given the pressing need to develop a fission weapon.[144] Immediately following the end of the war, Oppenheimer argued against continuing work on the Super at that time, due both to lack of need and to the enormous human casualties that would result from its use.[145][146]

Now in October 1949, Oppenheimer and the GAC recommended against the development of the Super.[147] He and the other GAC members were motivated partly by ethical concerns, feeling that such a weapon could only be strategically used, resulting in millions of deaths: "Its use therefore carries much further than the atomic bomb itself the policy of exterminating civilian populations."[148] They also had practical qualms, as there was no workable design for a hydrogen bomb at the time.[149] Regarding the possibility of the Soviet Union developing a thermonuclear weapon, the GAC felt that the United States could have an adequate stockpile of atomic weapons to retaliate against any thermonuclear attack.[150] In that connection, Oppenheimer and the others were concerned about the opportunity costs that would be incurred if nuclear reactors were diverted from materials needed for atom bomb production, to the materials such as tritium needed for a thermonuclear weapon.[151][152]

A majority of the AEC subsequently endorsed the GAC recommendation – and Oppenheimer thought that the fight against the Super would triumph – but proponents of the weapon lobbied the White House vigorously.[153] On January 31, 1950, President Truman, who was always predisposed to proceed with the development of the weapon anyway, made the formal decision to do so.[154] Oppenheimer and other GAC opponents of the project, especially James Conant, felt disheartened and considered resigning from the committee.[155] They stayed on, though their views on the hydrogen bomb were well known.[156]

In 1951, Edward Teller and mathematician Stanislaw Ulam developed what became known as the Teller-Ulam design for a hydrogen bomb.[157] This new design seemed technically feasible and Oppenheimer officially acceded to the weapon's development,[158] while still looking for ways in which its testing or deployment or use could be questioned.[159] As he later recalled:

The program we had in 1949 was a tortured thing that you could well argue did not make a great deal of technical sense. It was therefore possible to argue also that you did not want it even if you could have it. The program in 1951 was technically so sweet that you could not argue about that. The issues became purely the military, the political and the humane problem of what you were going to do about it once you had it.[160]

Oppenheimer, along with Conant and Lee DuBridge, another member who had opposed the H-bomb decision, left the GAC when their terms expired in August 1952.[161] President Truman had declined to reappoint them, as the president wanted new voices on the committee who were more in support of H-bomb development.[162] In addition, various opponents of Oppenheimer had communicated to Truman their desire that Oppenheimer leave the committee.[163]

Panels and study groups

Oppenheimer played a role on a number of government panels and study projects during the late 1940s and early 1950s, some of which found him in the middle of controversies and power struggles.[164]

In 1948 Oppenheimer chaired the Department of Defense's Long-Range Objectives Panel, which looked at the military utility of nuclear weapons including how they might be delivered.[165] After a year's worth of study, in spring 1952 Oppenheimer wrote the draft report of Project GABRIEL, which examined the dangers of nuclear fallout.[166] Oppenheimer was also a member of the Science Advisory Committee of the Office of Defense Mobilization.[167]

Oppenheimer participated in Project Charles during 1951, which examined the possibility of creating an effective air defense of the United States against atomic attack, and in the follow-on Project East River in 1952, which, with Oppenheimer's input, recommended building a warning system that would provide one-hour notice to atomic attacks against American cities.[166] Those two projects led to Project Lincoln in 1952, a large effort where Oppenheimer was one of the senior scientists.[166] Undertaken at the MIT Lincoln Laboratory, which had recently been founded to study issues of air defense, this in turn led to the Lincoln Summer Study Group, where Oppenheimer became a key figure.[168] Oppenheimer's and other scientists' urging that resources be allocated to air defense in preference to large retaliatory strike capabilities brought an immediate response of objection from the United States Air Force (USAF),[169] and a debate ensued about whether Oppenheimer and allied scientists, or the Air Force, was embracing an inflexible "Maginot Line" philosophy.[170] In any case, the Summer Study Group's work eventually led to the building of the Distant Early Warning Line.[171]

Edward Teller, who had been so uninterested in work on the atomic bomb at Los Alamos during the war that Oppenheimer had given him time instead to work on his own project of the hydrogen bomb,[172] had eventually left Los Alamos in 1951 to help found, in 1952, a second laboratory at what would become the Lawrence Livermore National Laboratory.[173] Oppenheimer had defended the history of work done at Los Alamos and had opposed the creation of the second laboratory.[174]

Project Vista looked at improving U.S. tactical warfare capabilities.[166] Oppenheimer was a late addition to the project in 1951 but wrote a key chapter of the report that challenged the doctrine of strategic bombardment and advocated for smaller tactical nuclear weapons which would be more useful in a limited theater conflict against enemy forces.[175] Strategic thermonuclear weapons delivered by long-range jet bombers would necessarily be under the control of the U.S. Air Force, whereas the Vista conclusions recommended an increased role for the U.S. Army and U.S. Navy as well.[176] The Air Force reaction to this was immediately hostile,[177] and they succeeded in getting the Vista report suppressed.[178]

During 1952 Oppenheimer chaired the five-member State Department Panel of Consultants on Disarmament,[179] which first urged that the United States postpone its planned first test of the hydrogen bomb and seek a thermonuclear test ban with the Soviet Union, on the grounds that avoiding a test might forestall the development of a catastrophic new weapon and open the way for new arms agreements between the two nations.[180] The panel lacked political allies in Washington, however, and the Ivy Mike shot went ahead as scheduled.[179] The panel then issued a final report in January 1953, which, influenced by many of Oppenheimer's deeply felt beliefs, presented a pessimistic vision of the future in which neither the United States nor the Soviet Union could establish an effective nuclear superiority but both sides could effect terrible damage on the other.[181] One of the panel's recommendations, which Oppenheimer felt was especially important,[182] was that the U.S. government practice less secrecy and more openness towards the American people about the realities of the nuclear balance and the dangers of nuclear warfare.[181] This notion found a receptive audience in the new Eisenhower administration and led to creation of Operation Candor.[183] Oppenheimer subsequently presented his view on the lack of utility of ever-larger nuclear arsenals to the American public with an article in Foreign Affairs in June 1953,[184] and it received attention in major American newspapers.[185]

Thus by 1953, Oppenheimer had reached another peak of influence, being involved in multiple different government posts and projects and having access to crucial strategic plans and force levels.[60] But at the same time, Oppenheimer had become the enemy of the proponents of strategic bombardment, who viewed the physicist's opposition to the H-bomb, followed by these accumulated positions and stances, with a combination of bitterness and distrust.[186] This view was paired with their fear that Oppenheimer's fame and powers of persuasion had made him dangerously influential within government, military, and scientific circles.[187]

Security hearing

The FBI under J. Edgar Hoover had been following Oppenheimer since before the war, when he showed Communist sympathies as a professor at Berkeley and had been close to members of the Communist Party, including his wife and brother. They strongly suspected that he himself was a member of the Party, based on wiretaps in which party members referred to him or appeared to refer to him as a Communist, as well as reports from informers within the Party.[188] He had been under close surveillance since the early 1940s, his home and office bugged, his phone tapped and his mail opened.[189] The FBI furnished Oppenheimer's political enemies with evidence that implicated Communist ties. These enemies included Strauss, an AEC commissioner who had long harbored resentment against Oppenheimer both for his activity in opposing the hydrogen bomb and for his humiliation of Strauss before Congress some years earlier; regarding Strauss's opposition to the export of radioactive isotopes to other nations, Oppenheimer had memorably categorized these as "less important than electronic devices but more important than, let us say, vitamins".[190]

Two men in suits at a table covered in papers. There is an American flag in the background.
President Dwight D. Eisenhower receives a report from Lewis L. Strauss, Chairman of the Atomic Energy Commission, on the Operation Castle hydrogen bomb tests in the Pacific, March 30, 1954. Strauss pressed for Oppenheimer's security clearance to be revoked.

On June 7, 1949, Oppenheimer testified before the House Un-American Activities Committee, where he testified that he had associations with the Communist Party USA in the 1930s.[191] He testified that some of his students, including David BohmGiovanni Rossi LomanitzPhilip MorrisonBernard Peters and Joseph Weinberg, had been Communists at the time they had worked with him at Berkeley. Frank Oppenheimer and his wife Jackie testified before the HUAC where they testified that they had been members of the Communist Party USA. Frank was subsequently fired from his University of Minnesota position. Unable to find work in physics for many years, he became instead a cattle rancher in Colorado. He later taught high school physics and was the founder of the San Francisco Exploratorium.[77][192]

The triggering event for the security hearing happened on November 7, 1953,[193] when William Liscum Borden, who until earlier in the year had been the executive director of the United States Congress Joint Committee on Atomic Energy, sent a letter to Hoover which said that "more probably than not J. Robert Oppenheimer is an agent of the Soviet Union."[194] Eisenhower never exactly believed the allegations within the letter, but felt compelled to move forward with an investigation,[195] and on December 3 he ordered that a "blank wall" be placed between Oppenheimer and any government or military secrets.[196] On December 21, 1953, Strauss told Oppenheimer that his security clearance had been suspended, pending resolution of a series of charges outlined in a letter, and discussed his resigning by way of requesting termination of his consulting contract with the AEC.[197] Oppenheimer chose not to resign and requested a hearing instead.[198] The charges were outlined in a letter from Kenneth D. Nichols, General Manager of the AEC.[199][200] The hearing that followed in April–May 1954, which was held in secret, focused on Oppenheimer's past Communist ties and his association during the Manhattan Project with suspected disloyal or Communist scientists.[201] It then continued with an examination of Oppenheimer's opposition to the H-bomb and stances in subsequent projects and study groups.[202] A transcript of the hearings was published in June 1954,[203] with some redactions. The US Department of Energy made public the full text of the transcript in October 2014.[204][205]

Head and shoulders of a man with bushy eyebrows.
Oppenheimer's former colleague, physicist Edward Teller, testified on behalf of the government at Oppenheimer's security hearing in 1954.[206]

One of the key elements in this hearing was Oppenheimer's earliest testimony about George Eltenton's approach to various Los Alamos scientists, a story that Oppenheimer confessed he had fabricated to protect his friend Haakon Chevalier. Unknown to Oppenheimer, both versions were recorded during his interrogations of a decade before. He was surprised on the witness stand with transcripts of these, which he had not been given a chance to review. In fact, Oppenheimer had never told Chevalier that he had finally named him, and the testimony had cost Chevalier his job. Both Chevalier and Eltenton confirmed mentioning that they had a way to get information to the Soviets, Eltenton admitting he said this to Chevalier and Chevalier admitting he mentioned it to Oppenheimer, but both put the matter in terms of gossip and denied any thought or suggestion of treason or thoughts of espionage, either in planning or in deed. Neither was ever convicted of any crime.[207]

Teller testified that he considered Oppenheimer loyal to the US government, but that:

In a great number of cases, I have seen Dr. Oppenheimer act—I understand that Dr. Oppenheimer acted—in a way which was for me was exceedingly hard to understand. I thoroughly disagreed with him in numerous issues and his actions frankly appeared to me confused and complicated. To this extent I feel that I would like to see the vital interests of this country in hands which I understand better, and therefore trust more. In this very limited sense I would like to express a feeling that I would feel personally more secure if public matters would rest in other hands.[208]

This led to outrage by the scientific community and Teller's virtual expulsion from academic science.[209] Ernest Lawrence refused to testify on the grounds that he was suffering from an attack of ulcerative colitis, but an interview transcript in which he condemned Oppenheimer was presented as evidence in his absence.[210] Groves, threatened by the FBI as having been potentially part of a coverup about the Chevalier contact in 1943, likewise testified against Oppenheimer.[211] Many top scientists, as well as government and military figures, testified on Oppenheimer's behalf. Inconsistencies in his testimony and his erratic behavior on the stand, at one point saying he had given a "cock and bull story" and that this was because he "was an idiot", convinced some that he was unstable, unreliable and a possible security risk. Oppenheimer's clearance was revoked one day before it was due to lapse anyway.[212] Isidor Rabi's comment was that Oppenheimer was merely a government consultant at the time anyway and that if the government "didn't want to consult the guy, then don't consult him".[213]

During his hearing, Oppenheimer testified willingly on the left-wing activities of many of his scientific colleagues. Had Oppenheimer's clearance not been stripped then he might have been remembered as someone who had "named names" to save his own reputation.[214] As it happened, Oppenheimer was seen by most of the scientific community as a martyr to McCarthyism, an eclectic liberal who was unjustly attacked by warmongering enemies, symbolic of the shift of scientific creativity from academia into the military.[215] Wernher von Braun summed up his opinion about the matter with a quip to a Congressional committee: "In England, Oppenheimer would have been knighted."[216]

In a seminar at the Woodrow Wilson Institute on May 20, 2009, based on an extensive analysis of the Vassiliev notebooks taken from the KGB archives, John Earl HaynesHarvey Klehr and Alexander Vassiliev confirmed that Oppenheimer never was involved in espionage for the Soviet Union. Soviet intelligence tried repeatedly to recruit him, but was never successful; Oppenheimer did not spy on the United States. In addition, he had several persons removed from the Manhattan Project who had sympathies to the Soviet Union.[217] Haynes, Klehr and Vassiliev also state Oppenheimer "was, in fact, a concealed member of the CPUSA in the late 1930s".[218] According to biographer Ray Monk: "He was, in a very practical and real sense, a supporter of the Communist Party. Moreover, in terms of the time, effort and money spent on Party activities, he was a very committed supporter".[219]

Final years and death

The frontiers of science are separated now by long years of study, by specialized vocabularies, arts, techniques, and knowledge from the common heritage even of a most civilized society; and anyone working at the frontier of such science is in that sense a very long way from home, a long way too from the practical arts that were its matrix and origin, as indeed they were of what we today call art.

Robert Oppenheimer, "Prospects in the Arts and Sciences" in Man's Right to Knowledge[220]

Starting in 1954, Oppenheimer lived for several months of the year on the island of Saint John in the U.S. Virgin Islands. In 1957, he purchased a 2-acre (0.81 ha) tract of land on Gibney Beach, where he built a spartan home on the beach.[221] He spent a considerable amount of time sailing with his daughter Toni and wife Kitty.[222]

Oppenheimer's first public appearance following the stripping of his security clearance was a lecture titled "Prospects in the Arts and Sciences" for the Columbia University Bicentennial radio show Man's Right to Knowledge, in which he outlined his philosophy and his thoughts on the role of science in the modern world.[223][224] He had been selected for the final episode of the lecture series two years prior to the security hearing, though the university remained adamant that he stay on even after the controversy.[225]

In February 1955, the president of the University of Washington, Henry Schmitz, abruptly cancelled an invitation to Oppenheimer to deliver a series of lectures there. Schmitz's decision caused an uproar among the students; 1,200 of them signed a petition protesting the decision, and Schmitz was burned in effigy. While they marched in protest, the state of Washington outlawed the Communist Party, and required all government employees to swear a loyalty oathEdwin Albrecht Uehling, the chairman of the physics department and a colleague of Oppenheimer's from Berkeley, appealed to the university senate, and Schmitz's decision was overturned by a vote of 56-40. Oppenheimer stopped briefly in Seattle to change planes on a trip to Oregon, and was joined for coffee during his layover by several University of Washington faculty, but Oppenheimer never lectured there.[226][227]

A group of men in uniforms, suits and academic dress sit for a formal group photograph
Award of honorary degrees at Harvard to Oppenheimer (left), George C. Marshall (third from left) and Omar N. Bradley (fifth from left). The President of Harvard University, James B. Conant, sits between Marshall and Bradley. June 5, 1947

Oppenheimer was increasingly concerned about the potential danger that scientific inventions could pose to humanity. He joined with Albert EinsteinBertrand RussellJoseph Rotblat and other eminent scientists and academics to establish what would eventually, in 1960, become the World Academy of Art and Science. Significantly, after his public humiliation, he did not sign the major open protests against nuclear weapons of the 1950s, including the Russell–Einstein Manifesto of 1955, nor, though invited, did he attend the first Pugwash Conferences on Science and World Affairs in 1957.[228]

In his speeches and public writings, Oppenheimer continually stressed the difficulty of managing the power of knowledge in a world in which the freedom of science to exchange ideas was more and more hobbled by political concerns. Oppenheimer delivered the Reith Lectures on the BBC in 1953, which were subsequently published as Science and the Common Understanding.[229] In 1955 Oppenheimer published The Open Mind, a collection of eight lectures that he had given since 1946 on the subject of nuclear weapons and popular culture. Oppenheimer rejected the idea of nuclear gunboat diplomacy. "The purposes of this country in the field of foreign policy", he wrote, "cannot in any real or enduring way be achieved by coercion". In 1957 the philosophy and psychology departments at Harvard invited Oppenheimer to deliver the William James Lectures. An influential group of Harvard alumni led by Edwin Ginn that included Archibald Roosevelt protested against the decision.[230] Some 1,200 people packed into Sanders Theatre to hear Oppenheimer's six lectures, entitled "The Hope of Order".[228] Oppenheimer delivered the Whidden Lectures at McMaster University in 1962, and these were published in 1964 as The Flying Trapeze: Three Crises for Physicists.[231]

Deprived of political power, Oppenheimer continued to lecture, write and work on physics. He toured Europe and Japan, giving talks about the history of science, the role of science in society, and the nature of the universe.[232] In September 1957, France made him an Officer of the Legion of Honor,[233] and on May 3, 1962, he was elected a Foreign Member of the Royal Society in Britain.[234][235] At the urging of many of Oppenheimer's political friends who had ascended to power, President John F. Kennedy awarded Oppenheimer the Enrico Fermi Award in 1963 as a gesture of political rehabilitation. Edward Teller, the winner of the previous year's award, had also recommended Oppenheimer receive it, in the hope that it would heal the rift between them.[236] A little over a week after Kennedy's assassination, his successor, President Lyndon Johnson, presented Oppenheimer with the award, "for contributions to theoretical physics as a teacher and originator of ideas, and for leadership of the Los Alamos Laboratory and the atomic energy program during critical years".[237] Oppenheimer told Johnson: "I think it is just possible, Mr. President, that it has taken some charity and some courage for you to make this award today."[238]

The rehabilitation implied by the award was partly symbolic, as Oppenheimer still lacked a security clearance and could have no effect on official policy, but the award came with a $50,000 tax-free stipend, and its award outraged many prominent Republicans in Congress. The late President Kennedy's widow Jacqueline, still living in the White House, made it a point to meet with Oppenheimer to tell him how much her husband had wanted him to have the medal.[239] While still a senator in 1959, Kennedy had been instrumental in voting to narrowly deny Oppenheimer's enemy Lewis Strauss a coveted government position as Secretary of Commerce, effectively ending Strauss's political career. This was partly due to lobbying by the scientific community on behalf of Oppenheimer.[240]

Oppenheimer giving a speech during a 1966 visit to Israel
Oppenheimer giving a speech during a 1966 visit to Israel

Oppenheimer was a chain smoker who was diagnosed with throat cancer in late 1965. After inconclusive surgery, he underwent unsuccessful radiation treatment and chemotherapy late in 1966.[241] He fell into a coma on February 15, 1967, and died at his home in Princeton, New Jersey, on February 18, aged 62. A memorial service was held a week later at Alexander Hall on the campus of Princeton University. The service was attended by 600 of his scientific, political and military associates that included Bethe, Groves, Kennan, Lilienthal, Rabi, Smyth and Wigner. His brother Frank and the rest of his family were also there, as was the historian Arthur M. Schlesinger, Jr., the novelist John O'Hara, and George Balanchine, the director of the New York City Ballet. Bethe, Kennan and Smyth gave brief eulogies.[242] Oppenheimer's body was cremated and his ashes were placed into an urn. His wife Kitty took the ashes to St. John and dropped the urn into the sea, within sight of the beach house.[243]

In October 1972, Kitty died at age 62 from an intestinal infection that was complicated by a pulmonary embolism. Oppenheimer's ranch in New Mexico was then inherited by their son Peter, and the beach property was inherited by their daughter Katherine "Toni" Oppenheimer Silber. Toni was refused security clearance for her chosen vocation as a United Nations translator after the FBI brought up the old charges against her father. In January 1977 (three months after the end of her second marriage), she committed suicide at age 32; her ex-husband found her hanging from a beam in her family beach house.[244] She left the property to "the people of St. John for a public park and recreation area".[245] The original house was built too close to the coast and succumbed to a hurricane. Today the Virgin Islands Government maintains a Community Center in the area.[246]

Legacy

When Oppenheimer was stripped of his position of political influence in 1954, he symbolized for many the folly of scientists who believed they could control the use of their research, and the dilemmas of moral responsibility presented by science in the nuclear age.[247] The hearings were motivated by politics and personal enmities, and also reflected a stark divide in the nuclear weapons community.[248] One group viewed with passionate fear the Soviet Union as a mortal enemy and believed having the most powerful weaponry capable of providing the most massive retaliation was the best strategy for combating that threat. The other group felt that developing the H-bomb would not in fact improve the Western security position and that using the weapon against large civilian populations would be an act of genocide, and advocated instead a more flexible response to the Soviets involving tactical nuclear weapons, strengthened conventional forces, and arms control agreements. The first of these groups was the more powerful in political terms, and Oppenheimer became its target.[249][250]

Rather than consistently oppose the "Red-baiting" of the late 1940s and early 1950s, Oppenheimer testified against some of his former colleagues and students, both before and during his hearing. In one incident, his damning testimony against former student Bernard Peters was selectively leaked to the press. Historians have interpreted this as an attempt by Oppenheimer to please his colleagues in the government and perhaps to divert attention from his own previous left-wing ties and those of his brother. In the end, it became a liability when it became clear that if Oppenheimer had really doubted Peters' loyalty, his recommending him for the Manhattan Project was reckless, or at least contradictory.[251]

A man smiling in a suit in suit and one in a uniform chat around a pile of twisted metal.
Oppenheimer and Leslie Groves in September 1945 at the remains of the Trinity test in New Mexico. The white canvas overshoes prevented fallout from sticking to the soles of their shoes.[252]

Popular depictions of Oppenheimer view his security struggles as a confrontation between right-wing militarists (symbolized by Teller) and left-wing intellectuals (symbolized by Oppenheimer) over the moral question of weapons of mass destruction.[253] The Oppenheimer story has often been viewed by biographers and historians as a modern tragedy.[254][255][256] National security advisor and academic McGeorge Bundy, who had worked with Oppenheimer on the State Department Panel of Consultants, has written: "Quite aside from Oppenheimer's extraordinary rise and fall in prestige and power, his character has fully tragic dimensions in its combination of charm and arrogance, intelligence and blindness, awareness and insensitivity, and perhaps above all daring and fatalism. All these, in different ways, were turned against him in the hearings."[256]

The question of the scientists' responsibility toward humanity inspired Bertolt Brecht's drama Galileo (1955), left its imprint on Friedrich Dürrenmatt's Die Physiker, and is the basis of the opera Doctor Atomic by John Adams (2005), which was commissioned to portray Oppenheimer as a modern-day Faust. Heinar Kipphardt's play In the Matter of J. Robert Oppenheimer, after appearing on West German television, had its theatrical release in Berlin and Munich in October 1964. Oppenheimer's objections resulted in an exchange of correspondence with Kipphardt, in which the playwright offered to make corrections but defended the play.[257] It premiered in New York in June 1968, with Joseph Wiseman in the Oppenheimer role. New York Times theater critic Clive Barnes called it an "angry play and a partisan play" that sided with Oppenheimer but portrayed the scientist as a "tragic fool and genius".[258] Oppenheimer had difficulty with this portrayal. After reading a transcript of Kipphardt's play soon after it began to be performed, Oppenheimer threatened to sue the playwright, decrying "improvisations which were contrary to history and to the nature of the people involved".[259]

Later Oppenheimer told an interviewer:

The whole damn thing [his security hearing] was a farce, and these people are trying to make a tragedy out of it. ... I had never said that I had regretted participating in a responsible way in the making of the bomb. I said that perhaps he [Kipphardt] had forgotten GuernicaCoventryHamburgDresdenDachauWarsaw, and Tokyo; but I had not, and that if he found it so difficult to understand, he should write a play about something else.[260]

Oppenheimer is the subject of numerous biographies, including American Prometheus: The Triumph and Tragedy of J. Robert Oppenheimer (2005) by Kai Bird and Martin J. Sherwin which won the Pulitzer Prize for Biography or Autobiography for 2006.[261] The 1980 BBC TV serial Oppenheimer, starring Sam Waterston, won three BAFTA Television Awards.[262][263] The Day After Trinity, a 1980 documentary about J. Robert Oppenheimer and the building of the atomic bomb, was nominated for an Academy Award and received a Peabody Award.[264][265] Oppenheimer's life has also been explored in the 2015 play Oppenheimer by Tom Morton-Smith,[266] and in the 1989 film Fat Man and Little Boy, where he was portrayed by Dwight Schultz.[267] In the upcoming American film Oppenheimer, directed by Christopher Nolan and based on American Prometheus, Oppenheimer is portrayed by actor Cillian Murphy.[268] A centennial conference and exhibit were held in 2004 at Berkeley,[269] with the proceedings of the conference published in 2005 as Reappraising Oppenheimer: Centennial Studies and Reflections.[270] His papers are in the Library of Congress.[271]

As a scientist, Oppenheimer is remembered by his students and colleagues as being a brilliant researcher and engaging teacher who was the founder of modern theoretical physics in the United States. Because his scientific attentions often changed rapidly, he never worked long enough on any one topic and carried it to fruition to merit the Nobel Prize,[272] although his investigations contributing to the theory of black holes may have warranted the prize had he lived long enough to see them brought into fruition by later astrophysicists.[57] An asteroid, 67085 Oppenheimer, was named in his honor,[273] as was the lunar crater Oppenheimer.[274]

As a military and public policy advisor, Oppenheimer was a technocratic leader in a shift in the interactions between science and the military and the emergence of "Big Science". During World War II, scientists became involved in military research to an unprecedented degree. Because of the threat fascism posed to Western civilization, they volunteered in great numbers both for technological and organizational assistance to the Allied effort, resulting in such powerful tools as radar, the proximity fuse and operations research. As a cultured, intellectual, theoretical physicist who became a disciplined military organizer, Oppenheimer represented the shift away from the idea that scientists had their "head in the clouds" and that knowledge on such previously esoteric subjects as the composition of the atomic nucleus had no "real-world" applications.[247]

Two days before the Trinity test, Oppenheimer expressed his hopes and fears in a quotation from the Bhagavad Gita:

In battle, in the forest, at the precipice in the mountains,
On the dark great sea, in the midst of javelins and arrows,
In sleep, in confusion, in the depths of shame,
The good deeds a man has done before defend him.[275]

Bibliography

Notes

  1. Jump up to:a b The meaning of the 'J' in J. Robert Oppenheimer has been a source of confusion. Historians Alice Kimball Smith and Charles Weiner sum up the general historical opinion in their volume Robert Oppenheimer: Letters and recollections, on page 1: "Whether the 'J' in Robert's name stood for Julius or, as Robert himself once said, 'for nothing' may never be fully resolved. His brother Frank surmised that the 'J' was symbolic, a gesture in the direction of naming the eldest son after the father but at the same time a signal that his parents did not want Robert to be a 'junior.'" It is not Askenazic Jewish custom to name children after living relatives. In Peter Goodchild's J. Robert Oppenheimer: Shatterer of Worlds, it is said that Robert's father, Julius, added the empty initial to give Robert's name additional distinction, but Goodchild's book has no footnotes, so the source of this assertion is unclear. Robert's claim that the 'J' stood "for nothing" is taken from an interview conducted by Thomas S. Kuhn on November 18, 1963, which currently resides in the Archive for the History of Quantum Physics. On the other hand, Oppenheimer's birth certificate reads "Julius Robert Oppenheimer".
  2. Jump up to:a b Oppenheimer spoke these words in the television documentary The Decision to Drop the Bomb (1965).[3] Oppenheimer read the original text in Sanskrit, and the translation is his own.[2] In the literature, the quote usually appears in the form shatterer of worlds, because this was the form in which it first appeared in print, in Time magazine on November 8, 1948.[4] It later appeared in Robert Jungk's Brighter than a Thousand Suns: A Personal History of the Atomic Scientists (1958),[5] which was based on an interview with Oppenheimer.[6]
  3. ^ Due to the subsequent development of the Standard Model, the muon is now considered to be a lepton and not a meson.[138]

References

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