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  2. Flashlight - Wikipedia

    en.wikipedia.org/wiki/Flashlight

    A set of modern LED flashlights. A flashlight or electric torch (Commonwealth English), usually shortened to torch, is a portable hand-held electric lamp.Formerly, the light source typically was a miniature incandescent light bulb, but these have been displaced by light-emitting diodes (LEDs) since the early 2000s.

  3. 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. The flashlight must be pumped ...

  4. Electric light - Wikipedia

    en.wikipedia.org/wiki/Electric_light

    An electric light, lamp, or light bulb is an electrical component that produces light. It is the most common form of artificial lighting . Lamps usually have a base made of ceramic , metal, glass, or plastic which secures the lamp in the socket of a light fixture , which is often called a "lamp" as well.

  5. Guide number - Wikipedia

    en.wikipedia.org/wiki/Guide_number

    Cameras with focal-plane shutters—even if they had PC connectors with X, F, M, or S-sync delays ("xenon sync" with zero delay and flashbulbs with peak delays of 5, 20, and 30 ms)—could not be used at speeds that attenuated guide numbers with most types of flashbulbs because their light curves were characterized by rapid rise and fall rates; the second shutter curtain would begin wiping ...

  6. Flashtube - Wikipedia

    en.wikipedia.org/wiki/Flashtube

    The 6 foot (180 cm) flashtubes used on the National Ignition Facility laser were some of the largest in commercial production, operating at 30 kJ input energy per pulse. [22] A flashtube (lower half of image) with a length of 12.5 feet (380 cm), (12 foot (372 cm) arc length), for substrate annealing.

  7. NBA coaches torch Kings over Mike Brown firing: 'No class' - AOL

    www.aol.com/news/nba-coaches-torch-kings-over...

    NBA coaches ripped the Sacramento Kings over the way they handled the firing of Mike Brown following a slow start to the 2024-25 regular season.