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2. Maglite - Wikipedia

   en.wikipedia.org/wiki/Maglite

   2012: Mini Maglite AA Pro 215 Lumens and Mini Maglite AA Pro+ 245 Lumens. 2012: Maglite 2D pro 274 Lumens with a Cree XP-G rather than a Cree XP-E, increasing brightness while decreasing beam distance efficiency. 2012: Maglite Mag-Tac flashlight plain bezel, 310 Lumens, low mode at around 100 Lumens. First Maglite flashlight to use CR123A ...

3. Olight - Wikipedia

   en.wikipedia.org/wiki/Olight

   Olight is a flashlight brand [4] that was founded in 2007 by Fox Fan. [5] The brand is headquartered in Taiwan, [6] and has operations in Georgia, United States. [7] Olight specializes in the production of flashlights, [8] including LED flashlights, [9] survival lights, [10] and tactical flashlights. [11] In addition, it also produces headlamps ...

4. Flashlight - Wikipedia

   en.wikipedia.org/wiki/Flashlight

   "Keychain" type lamps operating on button batteries, or lights using a single 5 mm LED, may only produce a few lumens. Even a small LED flashlight operating on an AA cell, but equipped with an LED, can emit 100 lumens. The most powerful LED flashlights produce more than 100,000 lumens and may use multiple LEDs. [14]

5. Light-emitting diode - Wikipedia

   en.wikipedia.org/wiki/Light-emitting_diode

   The first LED was created by Soviet inventor Oleg Losev [9] in 1927, but electroluminescence was already known for 20 years, and relied on a diode made of silicon carbide. Commercially viable LEDs only became available after Texas Instruments engineers patented efficient near-infrared emission from a diode based on GaAs in 1962.

6. Solar-powered flashlight - Wikipedia

   en.wikipedia.org/wiki/Solar-powered_flashlight

   A solar flashlight with built-in radio. Solar powered flashlights (American English) or solar powered torches (British English) are flashlights powered by solar energy stored in rechargeable batteries. Most of these flashlights use light-emitting diodes lamps [1] [2] since they have lower energy consumption compared to incandescent light bulbs. [3]

7. Dress shoe - Wikipedia

   en.wikipedia.org/wiki/Dress_shoe

   Dress shoes on a woman (left) and a man. (right) A dress shoe (U.S. English) is a shoe to be worn at smart casual or more formal events. A dress shoe is typically contrasted to an athletic shoe. Dress shoes are worn by many as their standard daily shoes, and are widely used in dance, for parties, and for special occasions.

8. Strobe light - Wikipedia

   en.wikipedia.org/wiki/Strobe_light

   A solid state flash controller is located within the base, which allows the LED beacon to operate in a variety of flash patterns. [ 6 ] Strobe lights are often used for aircraft anti-collision lighting both on aircraft themselves and also on tall stationary objects, such as television and radio towers.

9. Flash (photography) - Wikipedia

   en.wikipedia.org/wiki/Flash_(photography)

   For example, if the guide number is 100, and the shutter traverse time is 5 ms (a shutter speed of 1/200s), and the shutter speed is set to 1 ⁄ 2000 s (0.5 ms), the guide number reduces by a factor of √ 0.5 / 5, or about 3.16, so the resultant guide number at this speed would be about 32.