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The visual effects of a high-altitude or space-based explosion may last longer than atmospheric tests, sometimes in excess of 30 minutes. Heat from the Bluegill Triple Prime shot, at an altitude of 50 kilometers (31 miles), was felt by personnel on the ground at Johnston Atoll , and this test caused retina burns to two personnel at ground zero ...
It was launched from Johnston Atoll on July 9, 1962, and was the largest nuclear test conducted in outer space, and one of five conducted by the US in space. A Thor rocket carrying a W49 thermonuclear warhead (designed at Los Alamos Scientific Laboratory ) and a Mk. 2 reentry vehicle was launched from Johnston Atoll in the Pacific Ocean, about ...
In July 1962, the US carried out the Starfish Prime test, exploding a 1.44 Mt (6.0 PJ) bomb 400 kilometres (250 mi; 1,300,000 ft) above the mid-Pacific Ocean.This demonstrated that the effects of a high-altitude nuclear explosion were much larger than had been previously calculated.
Now new research claims to have shown that the explosion is in fact a nearly perfect sphere, and is completely symmetrical. Scientists have pursued a number of possible explanations – such as ...
The optimum height of burst to maximize this desired severe ground range destruction for a 1 kt bomb is 0.22 km; for 100 kt, 1 km; and for 10 Mt, 4.7 km. Two distinct, simultaneous phenomena are associated with the blast wave in the air: Static overpressure, i.e., the sharp increase in pressure exerted by the shock wave. The overpressure at any ...
Explosion Location Date Yield (approximate) Altitude (km) Nation of Origin Hardtack Teak: Johnston Island 1958-08-01 3.8 megatons: 76.8 United States: Hardtack Orange: Johnston Island 1958-08-12 3.8 megatons: 43 United States: Argus I: South Atlantic: 1958-08-27 1-2 kilotons: 200 United States: Argus II: South Atlantic: 1958-08-30 1-2 kilotons: 256
The Cold War ended in 1991, but the looming threat of nuclear attack lives on with more than 14,900 nuclear weapons wielded by nine nations.. A terrorist-caused nuclear detonation is one of 15 ...
The single-most important thing to remember if a nuclear bomb is supposed to explode, he says, is to shelter in place. "There were survivors in Hiroshima within 300 meters of the epicenter ...