Nishina Yoshio and Niels Bohr
Japanese physicist Yoshio Nishina (1890-1951, left) in front of a blackboard with Danish physicist Niels Bohr (1885-1962, right). Bohr was awarded the 1922 Nobel Prize for Physics for his work on the structure of the atom. He said that electrons could only occupy discrete levels around an atomic nucleus. This explained the spectrum of hydrogen. He also worked on the atomic bomb project during World War II. Nishina is known as 'the founding father of modern physics research in Japan'. His research covered cosmic rays and particle accelerator development. He independently detected what turned out to be the muon in cosmic rays and discovered the uranium-237 isotope. Photographed in 1937.
© Nishina Memorial Foundation, courtesy AIP Emilo Segre Visual Archives /SCIENCE PHOTO LIBRARY
The pawnshop as a last resource
This illustration shows a poor family, the wife holding a baby, two children and her husband. The pawnbroker examines a ring they have just given him. A poor older woman enters the shop in the background.
© Mary Evans Picture Library 2015 - https://copyrighthub.org/s0/hub1/creation/maryevans/MaryEvansPictureID/10221801
07, 1899, 21, Baby, Back Ground, Children, Dec, Enters, Examines, Family, February, Historical, History, Holding, Husband, Illustration, Iln, Import, Older, Pawn Broker, Poor, Resource, Ring, Shop, Shows, Wife, Woman
Andrei Sakharov, Russian physicist
Andrei Sakharov (1921-1989). Historical portrait of Russian nuclear physicist Andrei Dmitrievich Sakharov (left) in the Kremlin Palace of Congresses, Moscow, Russia, during the First Congress of People's Deputies of the USSR. Sakharov helped develop the first Soviet hydrogen bomb, successfully tested in August 1953. His doubts concerning the safety of nuclear tests, however, led him to campaign for a nuclear test- ban and improved civil rights. He was awarded the Nobel Peace Prize in 1975. In 1980, he was sent into internal exile, released by Gorbachov in 1986.
© RIA NOVOSTI/SCIENCE PHOTO LIBRARY