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A time bomb's timing mechanism may be professionally manufactured either separately or as part of the device, or it may be improvised from an ordinary household timer such as a wind-up alarm clock, wrist watch, digital kitchen timer, or notebook computer. The timer can be programmed to count up or count down (usually the latter; as the bomb ...
These devices would detonate the bomb if it was moved in any way. Typically, the safety-arming device used was a clockwork Memopark timer, which armed the bomb up to 60 minutes after it was placed [91] by completing an electrical circuit supplying power to the anti-handling
Designed by Ryūsuke Moriai as his first design for Casio, [5] the case of the F-91W measures 37.5 by 34.5 by 8.5 millimetres (1.48 by 1.36 by 0.33 in). The case is primarily made of resin, [6] with a stainless steel caseback and buttons, with the manufacturer's module number, 593, stamped on the caseback.
The Soviet Union tests its first atomic bomb, the RDS-1, officially starting the nuclear arms race. 1953 2 23:58 −1 The United States tests its first thermonuclear device in November 1952 as part of Operation Ivy, before the Soviet Union follows suit with the Joe 4 test in August. This remained the clock's closest approach to midnight (tied ...
The first one was Butterfly Bomb: Germany: General-purpose bomb: Glide bomb: Guided bomb: Improvised explosive device: Land mine: Explodes when pressure is applied to the bomb. Outlawed in 164 nations. 1832 Ming Dynasty: Laser guided bomb: Molotov cocktail: Improvised incendiary grenade often made in a beer bottle Nail bomb: 1970 Pipe bomb ...
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A pencil detonator or time pencil is a time fuze designed to be connected to a detonator or short length of safety fuse. They are about the same size and shape as a pencil , hence the name. They were introduced during World War II and developed at Aston House , Hertfordshire , UK .
Many computer systems measure time and date using Unix time, an international standard for digital timekeeping.Unix time is defined as the number of seconds elapsed since 00:00:00 UTC on 1 January 1970 (an arbitrarily chosen time based on the creation of the first Unix system), which has been dubbed the Unix epoch.