Flurescent light Bulb

A fluorescent lamp or fluorescent tube is a gas-discharge lamp that uses electricity to excite mercury vapor in argon or neon gas, resulting in a plasma that produces short-wave ultraviolet light. This light then causes phosphor to fluoresce, producing visible light.

Unlike incandescent lamps, fluorescent lamps always require a ballast to regulate the flow of power through the lamp. Compact fluorescent light bulbs may have a conventional ballast located in the fixture or they may have ballasts integrated in the bulbs, allowing them to be used in lampholders normally used for incandescent lamps.
Fluorescent Lights are widely appllied for video and photography production, and have been considered as the best lighting source for shooting. In addition, the lights deliver a smooth warm highly diffused light source which is close to daylight source.

Furthermore, the bulbs typically use around 1/4 to 1/3 the power of an incandescent achieving an equivalent brightness. Their greater efficiency results in a bulb that runs completely cool. Typical average lifetime ratings for linear fluorescent tubes are 10,000 and 20,000 hours, compared to 750 hours (110 V) and 1000 hours (240 V) for filament lamps.
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