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2. Compact fluorescent lamp - Wikipedia

   en.wikipedia.org/wiki/Compact_fluorescent_lamp

   The lamps use a tube that is curved or folded to fit into the space of an incandescent bulb, and a compact electronic ballast in the base of the lamp. Compared to general-service incandescent lamps giving the same amount of visible light , CFLs use one-fifth to one-third the electric power, and last eight to fifteen times longer.

3. Finally (company) - Wikipedia

   en.wikipedia.org/wiki/Finally_(company)

   The Finally Light Bulb Company was founded in 2012 by John Goscha, who as an undergraduate at Babson College, founded IdeaPaint.Goscha enlisted Victor Roberts, a former General Electric engineer, Walter Lapatovich from Osram Sylvania, [4] and engineers from Philips for technical expertise in lighting technology. [1]

4. A-series light bulb - Wikipedia

   en.wikipedia.org/wiki/A-series_light_bulb

   The A-series light bulb is the "classic" glass light bulb shape that has been the most commonly used type for general lighting service (GLS) applications since the early 20th century. It has a pear-like shape and is typically fitted to either an Edison screw or a bayonet cap base.

5. 3-way lamp - Wikipedia

   en.wikipedia.org/wiki/3-way_lamp

   A 3-way lamp, also known as a tri-light, is a lamp that uses a 3-way light bulb to produce three levels of light in a low-medium-high configuration. A 3-way lamp requires a 3-way bulb and socket, and a 3-way switch. In 3-way incandescent light bulbs, each of the filaments operates at full voltage. Lamp bulbs with dual carbon filaments were ...

6. 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

7. Electric light - Wikipedia

   en.wikipedia.org/wiki/Electric_light

   This is an accepted version of this page This is the latest accepted revision, reviewed on 24 January 2025. Device for producing light from electricity For other uses, see Electric light (disambiguation). "Electric lamp" and "Light bulb" redirect here. For the furniture, see light fixture. For the album, see Lightbulbs (album). For the film originally titled "Lightbulb", see Ingenious (2009 ...