Word: optic
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Dates: during 1930-1939
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...case of tritium, triple-weight hydrogen, is different. Its discovery was foreshadowed by the somewhat dubious magneto-optic method which anticipated the identification of deuterium. Then, in England, Lord Rutherford bounced deutons (deuterium nuclei) together, got protons and something of mass three which he thought was either an unknown form of helium or triple-weight hydrogen. Cautious Lord Rutherford took his time ascertaining that the new particles were both helium and tritium. Meantime Dr. Merle Antony Tuve and his associates at the Carnegie Institution of Washington had identified tritium particles by measuring their mass as indicated by the curvature...
...isotopes of its own. Birge of the University of California and Menzel of Harvard showed that the difference would be erased if one atom of hydrogen in every 4,500 had a nucleus twice the weight of the common nuclei. Allison of Alabama Polytechnic Institute found some curious magneto-optic effects in hydrogen which he chose to explain by the presence of a double-weight isotope...
Three years ago Professor Fred Allison of Alabama Polytechnic Institute was studying various elements by the magneto-optic method when he got unexpected results which led him to suspect the existence of a hydrogen isotope whose nucleus was twice as heavy as that of ordinary hydrogen. Not long afterward Dr. Urey and two associates concentrated enough of the isotope to identify it. He estimated that heavy hydrogen was present in ordinary hydrogen gas to the extent of about one part in 4,000. He named the new isotope deuterium...
...been talk of a third isotope of hydrogen whose atomic weight should be approximately 3 as against deuterium's 2 and hydrogen's 1. Two members of Dean Lewis's staff reported finding it last autumn (TIME, Nov. 20). But they used the same magneto-optic method by which Professor Allison predicted deuterium, and among scientists the worth of this procedure is debatable. In England Lord Rutherford (who calls deuterium diplogen and its nucleus the diplon) bounced deutons against deutons. Each collision produced a proton and something new of atomic weight 3. But cautious Lord Rutherford would...
...upon the removal of the goiter. When this does not happen, it is because the muscles sur- rounding the eyeballs remain swollen to from three to eight times their normal size Dr. Howard Christian Naffziger of San Francisco relieved the pressure by enlargement of the passages through which the optic nerves and the arteries of the eyes reach the eyesocket from the interior of the skull. The popping eyes then reset themselves...