Time bomb

Aftermath of the Grand Hotel bombing in Brighton (1984) which was targeted at British Prime Minister Margaret Thatcher, the result of a time bomb which had been placed in the hotel nearly a month before it detonated. Thatcher escaped harm, though 5 others perished and 31 were injured.

A time bomb (or a timebomb, time-bomb) is a bomb whose detonation is triggered by a timer. The use (or attempted use) of time bombs has been for various purposes including insurance fraud, terrorism, assassination, sabotage and warfare. They are a popular feature in fictional thriller and action films as they offer a way of imparting a dramatic sense of urgency.

Construction

Diagram of a simple time bomb in the form of a pipe bomb

The explosive charge is the main component of any bomb, and makes up most of the size and weight of it. It is the damaging element of the bomb (along with any fragments or shrapnel the explosion might produce with its container or neighboring objects). The explosive charge is detonated by a detonator.

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 detonates when the time runs out).

Other Languages
العربية: قنبلة موقوتة
Deutsch: Zeitzünder
español: Bomba de tiempo
فارسی: بمب ساعتی
한국어: 시한폭탄
Bahasa Indonesia: Bom waktu
Bahasa Melayu: Bom jangka
Nederlands: Tijdbom
日本語: 時限爆弾
português: Bomba‐relógio
Simple English: Time bomb
suomi: Aikapommi
粵語: 計時炸彈
中文: 計時炸彈