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  2. List of battery sizes - Wikipedia

    en.wikipedia.org/wiki/List_of_battery_sizes

    A common size for cells inside cordless tool battery packs. This size is also used in radio-controlled scale vehicle battery packs and some Soviet multimeters. 1 ⁄ 2-, 4 ⁄ 5 - and 5 ⁄ 4-sub-C sizes (differing in length) are also available. Soviet 332 type can be replaced with R10 (#4, 927, BF, U8) or 1.5 V elements from 3 V 2xLR10 packs ...

  3. Nokia Lumia 830 - Wikipedia

    en.wikipedia.org/wiki/Nokia_Lumia_830

    The Lumia 830 supports wireless inductive charging using the Qi standard.The AT&T version additionally supports the PMA standard. [6]The Lumia 830 includes a variety of sensors, including proximity sensor, ambient light sensor, magnetometer, gyroscope and accelerometer, as well as Microsoft's Motion Data activity tracker based on Qualcomm's SensorCore technology. [7]

  4. 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 ...

  5. Luminous flux - Wikipedia

    en.wikipedia.org/wiki/Luminous_flux

    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 intensity of 1 candela. If the optics were changed to concentrate the beam into 1/2 ...

  6. Comparison of commercial battery types - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_commercial...

    Under certain conditions, some battery chemistries are at risk of thermal runaway, leading to cell rupture or combustion. As thermal runaway is determined not only by cell chemistry but also cell size, cell design and charge, only the worst-case values are reflected here. [64]

  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].

  8. Luminous efficacy - Wikipedia

    en.wikipedia.org/wiki/Luminous_efficacy

    The former sense is sometimes called luminous efficacy of radiation, [4] and the latter luminous efficacy of a light source [5] or overall luminous efficacy. [ 6 ] [ 7 ] Not all wavelengths of light are equally visible, or equally effective at stimulating human vision, due to the spectral sensitivity of the human eye ; radiation in the infrared ...

  9. Luminous intensity - Wikipedia

    en.wikipedia.org/wiki/Luminous_intensity

    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 intensity of 1 candela. If the optics were changed to concentrate the beam into 1/2 steradian then the source would have a luminous intensity of 2 candela.

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