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Mechanically powered flashlights were distributed by aid organizations to survivors of the 2010 Haiti earthquake since electric power was lost for a long period. A mechanically powered flashlight (UK: mechanically powered torch) is a flashlight that is powered by electricity generated by the muscle power of the user, so it does not need ...
Flashlight. A set of LED flashlights. The angle-head flashlight (Fulton MX-991U) on the left uses an incandescent bulb, while the adjustable angle-head flashlight (Streamlight Sidewinder) on the right uses LEDs to give white, red, blue, and infrared light. A flashlight (US English) or electric torch (Commonwealth English), usually shortened to ...
1.1 batteryless flashlights. 4 comments. 1.2 plant's Water purification. 1 comment. 1.3 Sunrise Sunset Time Differences. 7 comments.
Maglite 2 D cell flashlight. Maglite (also spelled Mag-Lite, stylized as MAG-LITE) is a brand of flashlight manufactured in the United States by Mag Instrument, Inc. located in Ontario, California, and founded by Anthony Maglica. It was introduced in 1979. [1][2] Constructed principally of anodized 6061 aluminum, they have a variable-focus beam ...
The MX-991/U Flashlight (aka GI Flashlight, Army flashlight, or Moonbeam[1]) from the TL-122 military flashlight series of 1937-1944 and is a development of the MX-99/U flashlight issued in 1963 [clarification needed]. In use since the Vietnam War, the MX-991/U has been made by various contractors over the years, including GT Price, Bright Star ...
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Tritium radioluminescence is the use of gaseous tritium, a radioactive isotope of hydrogen, to create visible light. Tritium emits electrons through beta decay and, when they interact with a phosphor material, light is emitted through the process of phosphorescence. The overall process of using a radioactive material to excite a phosphor and ...
An electric battery is a source of electric power consisting of one or more electrochemical cells with external connections [ 1 ] for powering electrical devices. When a battery is supplying power, its positive terminal is the cathode and its negative terminal is the anode. [ 2 ] The terminal marked negative is the source of electrons that will ...
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