Word: yukawa
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Dates: during 1970-1979
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Later, when A-bombs exploded over Hiroshima and Nagasaki, Einstein expressed deep regret. After the war, he apologized personally ?and in tears?to visiting Japanese Physicist Hideki Yukawa. On another occasion, he said, "Had I known that the Germans would not succeed in developing an atomic bomb, I would have done nothing for the bomb...
...quantum mechanics describes the forces between particles in terms of other, "mediating" particles. The mediating particle of gravity is called the graviton. The mediating particle of the electromagnetic force is called the photon. And the mediating particle of the "strong" force, proposed in 1934 by the Japanese physicist Hideki Yukawa, is called the "pion...