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  2. Joy buzzer - Wikipedia

    en.wikipedia.org/wiki/Joy_buzzer

    A joy buzzer (also called a hand buzzer) is a practical joke device that consists of a coiled mainspring inside a disc worn in the palm of the hand. When the wearer shakes hands with another person, a button on the disc releases the spring, which rapidly unwinds creating a vibration that mimics an electric shock to the unsuspecting victim.

  3. Shock detector - Wikipedia

    en.wikipedia.org/wiki/Shock_detector

    Shock detector on a package Shock detectors can be mounted in sports helmets to help monitor impacts. A shock detector, shock indicator, or impact monitor is a device which indicates whether a physical shock or impact has occurred. These usually have a binary output and are sometimes called shock overload devices. Shock detectors can be used on ...

  4. Electrical injury - Wikipedia

    en.wikipedia.org/wiki/Electrical_injury

    This type of shock by definition must pass into the body through the skin. Microshock: Very small current source with a pathway directly connected to the heart tissue. The shock is required to be administered from inside the skin, directly to the heart i.e. a pacemaker lead, or a guide wire, conductive catheter etc. connected to a source of ...

  5. Shock (mechanics) - Wikipedia

    en.wikipedia.org/wiki/Shock_(mechanics)

    Shock testing typically falls into two categories, classical shock testing and pyroshock or ballistic shock testing. Classical shock testing consists of the following shock impulses: half sine, haversine, sawtooth wave, and trapezoid. Pyroshock and ballistic shock tests are specialized and are not considered classical shocks.

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  7. Shock-resistant watch - Wikipedia

    en.wikipedia.org/wiki/Shock-resistant_watch

    Shock resistant is a common mark stamped on the back of wrist watches to indicate how well a watch copes with mechanical shocks. In a mechanical watch , it indicates that the delicate pivots that hold the balance wheel are mounted in a spring suspension system intended to protect them from damage if the watch is dropped.

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  9. Mechanically powered flashlight - Wikipedia

    en.wikipedia.org/wiki/Mechanically_powered...

    A dyno torch, dynamo torch, or squeeze flashlight is a flashlight or pocket torch which generates energy via a flywheel.The user repeatedly squeezes a handle to spin a flywheel inside the flashlight, attached to a small generator/dynamo, supplying electric current to an incandescent bulb or light-emitting diode.