fluorescent bulb


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Related to fluorescent bulb: LED bulb, Compact fluorescent bulb

fluorescent bulb

A light source consisting of a long glass tube containing mercury in a partial vacuum. Available in many lengths and several diameters, the tube is lined with a fluorescent phosphor. When the mercury is excited by electricity, it emits ultraviolet (UV) light, which causes the phosphor to emit visible light. Fluorescent lamps have been widely used in commercial buildings for decades, because they use considerably less power and last much longer than incandescent lighting. However, due to their tubular design and cooler color temperatures, they have not been generally welcome in the home.

The Compact Fluorescent Lamp (CFL)
Compact fluorescents are designed to replace the standard incandescent bulb and screw into everyday table lamps and lighting fixtures. They are available in soft, warm hues like incandescent bulbs. See fluorescence, incandescent bulb, halogen bulb, LED bulb and color temperature.


CFL Coils and U's
Instead of straight tubes, coiled and U-shaped CFL tubes screw into the standard Edison base in incandescent lamps and fixtures. See Edison base.

Fluorescent bulb

Introduced in 1930, the bulb produces light by passing an electrical current through a gas-filled tube. Available in either warm or cool light, with long bulbs that fit into a ballast, which can be mounted onto a ceiling or under cabinets.
References in periodicals archive ?
The initial cost on some fluorescent bulbs is more expensive, but not always.
The lighting and engineer community is in near-universal agreement regarding fluorescent bulbs: they save a substantial amount of energy, compared to tradition incandescent light bulbs, although they aren't perfect.
* How do people in your neighborhood dispose of fluorescent bulbs?
Compact fluorescent bulbs, introduced in the United States with much fanfare in 1979 by Philips just as the nation's second energy crisis of the decade was getting under way, have never captured the public imagination.
Some environmentalists hope that switching to fluorescent bulbs will help curb the growth of the coal industry.
For example, Consolidated Edison, which serves New York City, has distributed more than a million compact fluorescent bulbs over the past two years.
He said he is happy to serve as a fluorescent bulb disposal site even though the containers he uses to collect the bulbs take up a significant amount of valuable retail space in his compact shop.
The unit comprises a 13-watt fluorescent bulb and a flexible gooseneck, which allows fingertip height and angle adjustments.
Caption(s): Above: New Garage Lights are available in hot colors / The battery-operated LED Umbrella Light fits around an umbrella pole / The Westinghouse Aluminum PAR 30 reflector compact fluorescent bulb replaces the halogen model
A fluorescent bulb uses about one-quarter to one-third the amount of energy to produce the same amount of light as its incandescent counterpart.
The 24-inch light is packaged with two bulbs: a 15-watt warm white fluorescent bulb, and a night-light bulb that turns on automatically when the fixture is not in use.
The 18-watt fluorescent bulb throws out enough light to illuminate your work area.

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