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The rapatronic camera (a portmanteau of rapid action electronic) is a high-speed camera capable of recording a still image with an exposure time as brief as 10 nanoseconds. The camera was developed by Harold Edgerton in the 1940s and was first used to photograph the rapidly changing matter in nuclear explosions within milliseconds of detonation ...
In the initial microseconds after the explosion, a fireball is formed around the bomb by the massive numbers of thermal x-rays released by the explosion process. These x-rays cannot travel very far in standard atmosphere before reacting with molecules in the air , so the result is a fireball that rapidly forms within about 10 metres (33 ft) in ...
Rollen Frederick Stewart (born February 23, 1944), also known as "Rock 'n' Rollen" and "Rainbow Man", is a pioneer of videobombing who established himself as celebrity in American sports culture by being best known for wearing a rainbow-colored afro-style wig and, later, holding up signs reading "John 3:16" at stadium sporting events around the United States and overseas in the 1970s and 1980s.
Their music video for "Shadow of the Day" from Minutes to Midnight, represents the Doomsday Clock as an actual clock with it reaching midnight at the end of the video. In the Flobots' song "The Circle in the Square", the lyrics say "the clock is now 11:55 on the big hand", which was the Doomsday Clock's setting in 2012 when the song was released.
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.
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 ...
[11] [12] Over 100 American companies were mobilized to build some 20 million shell fuzes. [13] The proximity fuze was one of the most important technological innovations of World War II. It was so important that it was a secret guarded to a similar level as the atom bomb project or D-Day invasion. [14] [15] [16] Admiral Lewis Strauss wrote that,
20 milliseconds – cycle time for European 50 Hz AC electricity; 31.25 milliseconds – a hundred twenty-eighth note at 60 BPM; 33.367 milliseconds – the amount of time one frame lasts in 29.97 fps video (most common for NTSC-legacy formats) 41.667 milliseconds – the amount of time one frame lasts in 24 fps video (most common cinematic ...