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  2. A-series light bulb - Wikipedia

    en.wikipedia.org/wiki/A-series_light_bulb

    The most commonly used A-series light bulb type is an A60 bulb [7] (or its inch-based equivalent, the A19 bulb [2] [4]), which is 60 mm (19 ⁄ 8 in or 2 + 3 ⁄ 8 in) wide at its widest point [3] and approximately 110 mm (4 + 3 ⁄ 8 in) in length. [8] Other sizes with a data sheet in IEC 60064 are A50, A55, A67, A68, A71, A75, and A80.

  3. Incandescent light bulb - Wikipedia

    en.wikipedia.org/wiki/Incandescent_light_bulb

    Available in numerous spot and flood beam spreads. Like all light bulbs, the number represents the diameter of the bulb in 1 ⁄ 8 of an inch. Therefore, a PAR 16 is 51 mm (2 in) in diameter, a PAR 20 is 64 mm (2.5 in) in diameter, PAR 30 is 95 mm (3.75 in) and a PAR 38 is 121 mm (4.75 in) in diameter. A package of four 60-watt light bulbs

  4. Timeline of lighting technology - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_lighting...

    1880 Edison produced a 16-watt lightbulb that lasts 1500 hours. 1882 Introduction of large scale direct current based indoor incandescent lighting and lighting utility with Edison's first Pearl Street Station; c. 1885 Incandescent gas mantle invented, revolutionises gas lighting.

  5. Electric light - Wikipedia

    en.wikipedia.org/wiki/Electric_light

    For LEDs, lamp life is defined as the operation time at which 50% of lamps have experienced a 70% decrease in light output. In the 1900s the Phoebus cartel formed in an attempt to reduce the life of electric light bulbs, an example of planned obsolescence. [37] [38] Some types of lamp are also sensitive to switching cycles.

  6. Mogul lamp - Wikipedia

    en.wikipedia.org/wiki/Mogul_lamp

    One controls the three-way center bulb, and the other turns on one, two, or all three (or four) of the peripheral bulbs. The center bulb may be very high power (often a three-way, 100-200-300 watt bulb), where the others are usually 60 watts or less. Some models have a night light in the base operated by a foot switch. One model turns the ...

  7. Photoflood - Wikipedia

    en.wikipedia.org/wiki/Photoflood

    Photoflood lamps are a type of incandescent light bulb designed for use as a continuous light source for photographic lighting. [1] The filaments of such lamps are operated at much higher temperatures than is the case for standard, general lighting service lamps. The result is a brilliance of light much higher than the lamp's wattage rating ...

  8. Centennial Light - Wikipedia

    en.wikipedia.org/wiki/Centennial_Light

    The pendant light at Fire Station #6 in which the bulb is installed. The Centennial Light was originally a 60-watt bulb, but has since dimmed significantly and is now as bright as a 4-watt bulb. [7] [8] [9] The hand-blown, carbon-filament common light bulb was invented by Adolphe Chaillet, a French engineer who filed a patent for this socket ...

  9. A19 - Wikipedia

    en.wikipedia.org/wiki/A19

    A19, A-19, etc. may refer to: A19, one of the Encyclopaedia of Chess Openings codes for the English Opening; A19, a 2002 album by the Battlefield Band "A19", a song by Maxïmo Park from the Missing Songs album; A19 light bulb, a common household bulb; A19 road, a code used to identify a particular road in several countries

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