Word: megaton
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Dates: during 1960-1969
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...solid punches right in the kisser. But don't sell the Kid short. He has a heart of gold and a head of lead. When his eyes begin to look like two fried eggs, he'll land a right on his opponent's jaw like a megaton of bricks. Blowie! Another K.O. for Kid Galahad...
...Pacific, the U.S. exploded its highest nuclear test some 260 miles above the earth. It was the first invasion of the fringes of outer space by a thermonuclear device, and what it proved militarily for the security of the U.S. was a carefully kept secret. But the one-megaton bomb that arched over tiny Johnston Island on a three-stage Delta rocket caused the most dazzling-and awesome-display of man's power ever seen...
Atomic Energy Commission scientists last week were "keyed up and ready" to take the U.S. into a new high level of nuclear testing. First shot on the agenda: a giant skyrocket exploding not more than 60 miles above Johnston Island, its sub-megaton flash visible in Hawaii 700 miles away, its power sending waves of electrical disturbance around the earth to be picked up by sensitive instruments...
...altitude blasts. When a nuclear weapon explodes in the thin air more than ten miles above the earth, it creates vast numbers of long-lasting free electrons. If they are numerous enough, the electrons can absorb and reflect many kinds of radio waves. The AEC estimates that a one-megaton weapon bursting at a 50-mile altitude will disrupt high-frequency radio waves (the most useful kind for long-distance communication) for 600 miles around...
Most interesting test scientifically, and the most hotly criticized, is a sub-megaton shot to be exploded at about 500 miles altitude. It will be high enough to have a direct effect on the lower levels of the Van Allen belt. AEC scientists think it will create a "magnetic bubble" hundreds of miles in diameter that will distort the lines of force of the earth's magnetic field. The bubble will probably disappear after 30 to 40 minutes, but while it lasts, it will be an obstacle to the free movement of particles in the radiation belt. Some...