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Robbins also designed the Naquadah ark, which turns out to be a bomb. The prop had a number of mechanical and electrical functions, including a countdown timer. During filming, production had some difficulty getting the countdown timer to operate at the desired speed.
The briefcase bomb used in the July 20 plot used a captured British pencil detonator inserted into a block of British plastic explosives weighing approximately two pounds. The bomb was set to 30 minutes and detonated as planned, but Hitler survived with minor injuries. Stauffenberg could not prepare the second block, though. He got rid of it ...
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 ...
Except for the last few minutes, which are highly automated and rigid, scheduled activities rarely take exactly the scheduled time, and the T-minus clock only corresponds approximately to the time until launch. A hold is the suspension of the normal countdown process, during which the T-minus clock is stopped and no planned activities take ...
A crucial favorable weather report came in at 04:45, [68] and the final twenty-minute countdown began at 05:10, read by Samuel Allison. [103] A rocket launched at 5:25 to signal five minutes before detonation; another rocket fired at 5:29. At 5:29:15, a switch in the control bunker started the detonation timer. [35] By 05:30 the rain had gone. [68]
On the “For a Fortnight” page of Swift’s official website, a countdown clock has been added in the center. In a typewriter font, the time ticks down until Thursday, April 18, at 2 p.m. EST.
After she reaches "nine", she pauses, and a booming male voice is heard counting the numbers backward from "ten", in a manner similar to the start of a missile launch countdown. A zoom of the video still concentrates on the girl's right eye until her pupil fills the screen, which is then replaced by the flash and sound of a nuclear explosion.
Usually the method required to initiate a self-destruct sequence is lengthy and complex, as in Alien, [13] or else requires multiple officers aboard the ship with individual passcodes to concur, [14] while audible and/or visible countdown timers allow audiences to track the growing urgency of the characters' escape.