Search results
Results from the WOW.Com Content Network
Air raid alarm (Flyglarm): a 1-minute pattern of 2 second tones separated by 2 second gaps. Sent when the threat of an air attack is imminent. Sent when the threat of an air attack is imminent. Important public announcement, general alarm ( Viktigt meddelande till allmänheten ): a pattern of 7 second long tones and 14 second long gaps.
Shop the best loud alarm clocks for heavy sleepers on Amazon and more that are recommended by our editor, who tested several of them, and a sleep psychologist. 7 Best Alarm Clocks for Heavy ...
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 ...
There, one should assume a prone-like position, lying face-down, and to afford protection against the continuing heat of the explosion further cover exposed skin and the back of one's head with one's clothes; or, if no excess cover or cloth is available, one should cover the back of one's head and neck with one's hands.
Hawaii has a statewide system of green painted Federal Signal Modulators and Modulator II sirens throughout the state to warn of tsunamis, volcanic eruptions, bomb threats and any other dangerous emergencies or natural disasters. They are replacing a system of old mechanical Federal Signal sirens, such as Thunderbolts, SD-10s, among others, in ...
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 [92] by completing an electrical circuit supplying power to the anti-handling
Haifa — the largest city in northern Israel — was now in Hezbollah’s crosshairs.
An example of a simple timer is an hourglass. Commonly, a timer triggers an alarm when it ends. A timer can be implemented through hardware or software. Stopwatches operate in the opposite direction, upwards from 00:00, measuring elapsed time since a given time instant. Time switches are timers that control an electric switch.