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  2. Time bomb - Wikipedia

    en.wikipedia.org/wiki/Time_bomb

    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 frequent plot device in thriller and action films as they offer a way of imparting a dramatic sense ...

  3. Ahmed Mohamed clock incident - Wikipedia

    en.wikipedia.org/wiki/Ahmed_Mohamed_clock_incident

    The episode arose when Mohamed reassembled the parts of a digital clock in an 8-inch (20 cm) [1] pencil container and brought it to school to show his teachers. His English teacher thought the device resembled a bomb, confiscated it, and reported him to the principal. The local police were called, and they questioned him for an hour and a half.

  4. PFM-1 mine - Wikipedia

    en.wikipedia.org/wiki/PFM-1_mine

    PFM-1 ( Russian: ПФМ-1 — Противопехотная Фугасная Мина-1, lit. 'Anti-infantry high-explosive mine') is a scatterable high explosive anti-personnel land mine of Soviet and Russian production. [1] It is also known as a Green Parrot or Butterfly Mine. [1] The mines can be deployed from mortars, helicopters and ...

  5. Antimatter weapon - Wikipedia

    en.wikipedia.org/wiki/Antimatter_weapon

    An antimatter weapon is a theoretically possible device using antimatter as a power source, a propellant, or an explosive for a weapon.Antimatter weapons are currently too costly and unreliable to be viable in warfare, as producing antimatter is enormously expensive (estimated at $6 billion for every 100 nanograms), the quantities of antimatter generated are very small, and current technology ...

  6. Doomsday Clock - Wikipedia

    en.wikipedia.org/wiki/Doomsday_Clock

    Doomsday Clock. The Doomsday Clock is a symbol that represents the likelihood of a human-made global catastrophe, in the opinion of the members of the Bulletin of the Atomic Scientists. [1] Maintained since 1947, the clock is a metaphor, not a prediction, for threats to humanity from unchecked scientific and technological advances.

  7. Casio F-91W - Wikipedia

    en.wikipedia.org/wiki/Casio_F-91W

    The F-91W is a chronograph, featuring a 1 ⁄ 100 second stopwatch with a count up to 59:59.99 (nearly one hour). The stopwatch is also able to mark net and split times (e.g laps). Other features include an hourly time beep and a single daily alarm lasting 20 seconds and an annual calendar, leap years not supported as the watch does not record ...

  8. Pencil detonator - Wikipedia

    en.wikipedia.org/wiki/Pencil_detonator

    Pencil detonator. An array of World War 2 pencil detonators displayed at the Museum of the British Resistance Organisation at the Parham Airfield Museum, 2007. A pencil detonator or time pencil is a time fuze designed to be connected to a detonator or short length of safety fuse. They are about the same size and shape as a pencil, hence the name.

  9. Duck and cover - Wikipedia

    en.wikipedia.org/wiki/Duck_and_cover

    In the 1952 United States civil defensefilm, Duck and Cover, "Bert the Turtle" teaches schoolchildren how to protect themselves during a nuclear attack. Duck and cover drill in a sсhool in Brooklynin 1962. "Duck and cover" is a method of personal protection against the effects of a nuclear explosion. Ducking and covering is useful in offering ...