Word: high-yield
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...bomber from being destroyed by the effects of its own thermonuclear bomb. The toss-bombing technique (TIME, Sept. 24), which projects the bomb forward and upward while the bomber turns on its back and gets away, does not give a big margin of safety in the case of high-yield bombs. But if the pod is engineered as an air-to-ground missile with rocket propulsion of its own, it can be launched while the Hustler is many miles away from the target. While it is still curving through the air, the Hustler will streak for home, safe from enemy...
...Neumann played a vital part in the wartime atom-bomb project. After the war he continued to advise the Government on high-level scientific problems, including thermonuclear weapons and guided missiles. In 1955 he became a member of the Atomic Energy Commission. His advice was instrumental in convincing the Department of Defense that a high-yield thermonuclear warhead could be made light enough to be carried across an ocean by a ballistic missile of practicable size. This thermonuclear breakthrough now dominates the thinking of the U.S. (and probably of the U.S.S.R.) about strategic warfare...
...high-yield H-bombs of the current test program were dropped from aircraft and exploded high above the surface. Thus their fireballs did not concentrate their fury on a small area of coral, but spread it over miles of water. As a result, not much pulverized material was carried upward. The total radioactivity produced by such a bomb may be large, but most of the potential fallout is distributed high in the stratosphere in the form of extremely fine particles or even single molecules. Such impalpable stuff is slow to fall. Not much would fall in any one place...
...Earth, Air & Water. First atomic news that reaches Japan from a "high-yield" explosion in mid-Pacific is carried by earth waves, detected by seismographs. They are followed about three hours later by air waves, picked up by barographs. Then come ocean waves, which register on tide gauges...
...committees were not much worried about nuclear-weapons tests. "High-yield" thermonuclear explosions toss radioactive material into the stratosphere, where it hangs for years drifting around the earth. The tests also raise the radio active level of large areas of ocean. But these effects are slight, and will do no appreciable harm unless the tempo of bomb testing is increased many times over. There is nothing, say the scientists, to the popular idea that bomb testing has upset the world's weather...