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2. Flashlight - Wikipedia

   en.wikipedia.org/wiki/Flashlight

   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] LEDs are highly efficient at producing colored light compared with incandescent lamps and filters. An LED flashlight may contain different LEDs for ...

3. Comparison of display technology - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_display...

   TV: Yes DLP front-projection Flat (limited only by brightness) TV or presentation Yes LCoS self-contained rear-projection Flat 110 [13] 279 TV: Yes LCoS front-projection Flat (limited only by brightness) TV or presentation Yes Laser self-contained rear projection Flat lenticular: 75 [14] 191 TV: Yes LED: Flat 279.92 [15] 711 Billboards, TV: Yes ...

4. LED lamp - Wikipedia

   en.wikipedia.org/wiki/LED_lamp

   A 230-volt LED filament lamp, with an E27 base. The filaments are visible as the eight yellow vertical lines. An assortment of LED lamps commercially available in 2010: floodlight fixtures (left), reading light (center), household lamps (center right and bottom), and low-power accent light (right) applications An 80W Chips on board (COB) LED module from an industrial light luminaire, thermally ...

5. Foot-lambert - Wikipedia

   en.wikipedia.org/wiki/Foot-lambert

   A foot-lambert or footlambert (fL, sometimes fl or ft-L) is a unit of luminance in United States customary units and some other unit systems. A foot-lambert equals 1/π or 0.3183 candela per square foot, or 3.426 candela per square meter (the corresponding SI unit).

6. Luminous flux - Wikipedia

   en.wikipedia.org/wiki/Luminous_flux

   Luminous flux (in lumens) is a measure of the total amount of light a lamp puts out. The luminous intensity (in candelas) is a measure of how bright the beam in a particular direction is. If a lamp has a 1 lumen bulb and the optics of the lamp are set up to focus the light evenly into a 1 steradian beam, then the beam would have a luminous ...

7. Fulton MX991/U Flashlight - Wikipedia

   en.wikipedia.org/wiki/Fulton_MX991/U_Flashlight

   A photograph showing two Fulton MX-991/U Flashlights, next to an unofficial reproduction and a standard angle-head flashlight. 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].