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A modern LF radio-controlled clock. A radio clock or radio-controlled clock (RCC), and often colloquially (and incorrectly [1]) referred to as an "atomic clock", is a type of quartz clock or watch that is automatically synchronized to a time code transmitted by a radio transmitter connected to a time standard such as an atomic clock.
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 ...
Vintage Spice Girls novelty radio, AM-FM bands, Made in China, circa 1998: Date: 2020-03-24, 09:34:01 (original upload) 2020-03-20 20:09 (photo) Source: Vintage Spice Girls Novelty Radio, AM-FM Bands, Made In China, Circa 1998: Author: Joe Haupt from USA
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Time fuzes detonate after a set period of time by using one or more combinations of mechanical, electronic, pyrotechnic or even chemical timers. Depending on the technology used, the device may self-destruct [ 21 ] (or render itself safe without detonation [ 22 ] ) some seconds, minutes, hours, days, or even months after being deployed.
A British clockwork Time fuze for an artillery shell using the Thiel mechanism, circa 1936 British "Boxer" wooden time fuze, 1870s, burned for maximum 9 seconds, adjusted by punching through applicable hole British aluminium No. 25 Mk IV time fuze, using a burning gunpowder timer, circa 1914, used for star shells
A hollow plutonium pit was the original plan for the 1945 Fat Man bomb, but there was not enough time to develop and test the implosion system for it. A simpler solid-pit design was considered more reliable, given the time constraints, but it required a heavy U-238 tamper, a thick aluminium pusher, and three tons of high explosives. [citation ...
Regency TR-1 transistor radio. The Regency TR-1 was the first commercially manufactured transistor radio, introduced in 1954.Despite mediocre performance, about 150,000 units were sold, due to the novelty of its small size and portability.