Authors: Brian Van DeMark
Those gathered in Stimson’s office that morning shared two unstated assumptions: that the atomic bomb would have a decisive impact on Japan’s leaders; and that the American public, if they knew of its existence, would demand that it be used to save the lives of American servicemen. The expenditure of billions of dollars; mounting U.S. casualties in the face of tenacious Japanese resistance; the bomb’s expected salutary effect on postwar relations with the Soviet Union—all these factors bolstered a predisposition toward use. “Throughout the morning’s discussion,” Compton later wrote, “it seemed to be a foregone conclusion that the bomb would be used. It was regarding only the details of strategy and tactics that differing views were expressed.”
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NINE PHYSICISTS
Leo Szilard (1898–1964), Hungarian-born American physicist who helped initiate the Manhattan Project in 1939 yet vigorously opposed dropping the atomic bomb on Japan’s cities in the summer of 1945. After the war, he became an ardent promoter of international control of nuclear weapons. (Bulletin of the Atomic Scientists,
courtesy AIP Emilio Segrè Visual Archives
)
Enrico Fermi (1901–1954), Italian-born American physicist who conducted early neutron experiments and directed the first controlled nuclear chain reaction in December 1942. He reluctantly supported use of the atomic bomb against Japan and development of the superbomb after the war. (
AIP Emilio Segrè Visual Archives, Segrè Collection
)
I. I. Rabi (1898–1988), American physicist who consulted at Los Alamos during the war, where he acted as an adviser and consultant to his close friend, Robert Oppenheimer. He served in many government advisory posts after the war and vigorously defended Oppenheimer against charges of being a security risk. (©
AP/Wide World Photos
)
Niels Bohr (1885–1962), Danish theoretical physicist whose concern about the terrifying prospects for humanity posed by atomic weapons led him to lobby British prime minister Winston Churchill and American president Franklin Roosevelt during the war in favor of international control. He was unsuccessful. (
National Archives and Records Administration, courtesy AIP Emilio Segrè Visual Archives
)
Edward Teller (1908–2003), Hungarian-born American physicist who helped convince the U.S. government to build an atomic bomb and later pushed for development of the superbomb. A staunch anticommunist, he sought American nuclear superiority over the Soviet Union during the Cold War. (©
CORBIS
)
Ernest Lawrence (1901–1958), American experimental physicist who invented the first high-energy particle accelerator, the cyclotron, and founded the Berkeley and Livermore National Laboratories. An early advocate of government support for atomic research in 1941, he opposed development of the superbomb immediately after the war but later changed his mind. (
Ernest Orlando Lawrence Berkeley National Laboratory, courtesy AIP Emilio Segrè Visual Archives
)
Arthur Compton (1892–1962), American physicist who chaired the governmental advisory committee in 1941 that assessed fission’s military potential. He later directed the Metallurgical Laboratory at the University of Chicago, where scientists researched plutonium and the nuclear chain reaction. He abandoned weapons work after the war. (
AIP Emilio Segrè Visual Archives, W. F Meggers Gallery of Nobel Laureates
)
Robert Oppenheimer (1904–1967), American theoretical physicist who led development of the atomic bomb as director of the Los Alamos National Laboratory from 1943–1945. After the war, he sought to resolve the political and moral problems arising from nuclear weapons but fell victim to an anticommunist witch-hunt. (
AIP Emilio Segrè Visual Archives
)
Hans Bethe (1906–2005), German-born American physicist who led the Theoretical Division at Los Alamos during the war and reluctantly participated in development of the superbomb after the war. He later became a leading critic of the nuclear arms race and the policy of nuclear superiority championed by Edward Teller. (©
CORBIS
)
THE NETWORK
Niels Bohr (second from left) stood at the center of a close-knit network of European and American physicists in the 1920s and 1930s. Here he meets with younger colleagues, including Edward Teller (second from right) and Otto Frisch (far right). (
AIP Emilio Segrè Visual Archives, Wheeler Collection
)