Word: bomb
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Dates: during 1960-1969
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...with," said Gordon, addressing a meeting of the National Safety Congress in Chicago, "it is completely unrealistic even to talk about a foolproof and crashproof car. An automobile must still be something that people will want to buy and use. Safety, in any environment from a bathtub to a bomb shelter, is a relative term, not an absolute. In the case of the automobile, we can only design into it the greatest degree of safety that is consistent with other essential functional characteristics. Beyond that, we must depend on intelligent...
...When a bomb in the megaton range explodes within a few hundred feet of the ground, as some of the Soviet tests presumably did, it produces three kinds of fallout...
...LOCAL FALLOUT. This is mostly the coarse, comparatively heavy material blasted out of the bomb crater. Although extremely dangerous, it spreads only a few hundred miles from the explosion. It does not get into the long-term circulation of the atmosphere, and it does not threaten the earth as a whole...
After the bomb's fireball has expanded to full size (1½ miles diameter for a one-megaton bomb), the cloud of hot gas rises like a balloon, dragging with it a column of dust. Some of the dust falls to the ground within a few hours, becoming part of the local fallout. The rest climbs high in the atmosphere with the cooling, condensing cloud...
...5TRATOSPHERIC FALLOUT. The third kind of fallout-stratospheric-will not disappear so quickly. Bombs of more than a megaton of power send a large part of their ballooning fireballs climbing high into the stratosphere where there are no falling raindrops or snowflakes. In the frigid stable stratosphere, extremely fine particles of radioactive matter from a big bomb may hang suspended for years-and the bigger the bomb, the more of its dangerous fallout goes into the stratosphere...