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Gentler Triggers. Although Bhabha was the first topflight scientist to predict the coming of H-power, the prospect has intrigued his brethren everywhere (TIME, July 25). Present atomic reactors all use the fission process: splitting nuclei of the heavier atoms, e.g., uranium or plutonium, to produce a controllable reaction. But fusion, used solely in the H-bomb, involves binding the nuclei of far more plentiful, lighter atoms (deuterium, lithium, etc.) under tremendous heat to produce an explosion...
...reappraisal of every premise and postulate of modern natural science, a physical revolution whose end is far from sight. In 1905 Einstein published his jottings in five papers. In the fifth, and shortest, paper (Does the Inertia of a Body Depend on its Energy Content?) lay the mathematical nuclei of the atomic...
...Gamow had a tale to tell that flashed back to 1932. He had talked at a Russian scientific meeting about a paper by an English astronomer and a German physicist who suggested that the energy radiated by the sun and other stars was caused by reactions between atomic nuclei. A nonscientist, Nikolai Bukharin, a top Communist official in the post-Lenin era, approached Gamow. He asked Gamow if nuclear reactions like those of the sun could be created on earth and put to some use. Bukharin even offered to turn over the Leningrad electrical works to Gamow...
...When exploded on the ground, an H-bomb throws into the air something like one billion tons of pulverized material. Floating for years in the upper atmosphere, the dust may cut the strength of sunlight. It may act as condensation nuclei, stimulating rainfall, and thereby changing the pattern of the winds. Such modifications of climate will not neces sarily be good...
Like most careful physicists, Dr. Schein does not like to speculate about the possible origin of antiprotons. It is quite possible, says he, that remote stars may be made of "reversed matter," whose atoms have negative antiprotons in their nuclei and positrons (positive electrons) revolving around them. There would be no way to tell; the reversed matter would send out the same kind of light as ordinary matter. It would behave itself normally as long as it stayed at home. But if particles from an antiproton star should wander into a region, like the earth's atmosphere, where...