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A doomsday device is a hypothetical construction — usually a weapon or weapons system — which could destroy all life on a planet, particularly Earth, or destroy the planet itself, bringing "doomsday", a term used for the end of planet Earth.
Cobalt is a metal and is used industrially in many high-strength alloys. It is not particularly dangerous, but has some chemical toxicity in the same way most heavy metals do. I picked that because it is a round number around 100 times higher than the level that was considered to require mandatory evacuation.
Doomsday machine, hypothetical device that would automatically trigger the nuclear destruction of an aggressor country or the extinction of all life on Earth in the event of a nuclear attack on the country maintaining the device. The former type of device might automatically launch a large number.
- The Editors of Encyclopaedia Britannica
Sep 26, 2009 · RAZ: It was a system designed to unleash global nuclear Armageddon if Russia were attacked. Now, in 1964, that concept was a movie fantasy. What few knew until recently is that in 1984, the Soviet...
Sep 21, 2009 · Known as Looking Glass, it was the American equivalent of Perimeter, guaranteeing that the US could launch a counterattack.
Sep 7, 2007 · The Soviet doomsday device -- a giant cobalt bomb rigged to explode were Russia ever nuked, rendering the earth's surface uninhabitable -- gained fictional fame in Dr. Strangelove.
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Apr 11, 2017 · In the event of a nuclear attack on a given country, a doomsday device is designed to launch a vigorous retaliatory nuclear strike on the attacker, regardless of whether or not anyone is...
