EMILIO SEGRE VISUAL ARCHIVES, PHYSICS TODAY COLLECTION / AMERICAN INSTITUTE OF PHYSICS / SCIENCE PHOTO LIBRARY EMILIO SEGRE VISUAL ARCHIVES, PHYSICS TODAY COLLECTION / AMERICAN INSTITUTE OF PHYSICS / SCIENCE PHOTO LIBRARY
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Akira Tonomura (1942-2012), Japanese physicist. Tonomura studied at the University of Tokyo, joining the Hitachi Central Research Laboratory after graduation. He worked in the 1970s on the development of electron holography microscopy. This technique is used to study electric and magnetic fields in thin films. Tonomura was able to use the technique to observe magnetic force lines. In 1986, he verified a quantum mechanical phenomenon called the Aharonov-Bohm effect. Tonomura also worked on magnetic vortex movement in superconductors. He was awarded the Benjamin Franklin Medal in Physics from the Franklin Institute in 1999.
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