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 ?
Like many new advances in technology, the quality of fluorescent bulbs has improved.
The new standard requires most light bulbs to be 25 to 30 percent more efficient by 2014, and at least 60 percent more efficient by 2020, and that's something the new fluorescent bulbs can accomplish.
That's why Lane County Waste Management analyst Chad Ficek is celebrating businesses such as Emerald Valley Gardens, the latest in a string of Lane County stores that have agreed to accept spent fluorescent bulbs and turn them over to a county and state-run collection program that safely extracts the mercury for recycling.
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.
Compact designs have made fluorescent bulbs even smaller.
With proper handling, fluorescent bulbs, which contain small amounts of mercury, are safe to use, according to local Board of Health directors.
Growth is coming from the compact fluorescent bulb segment, and distribution is shifting toward home centers, which are grabbing market share from drug, food and mass channels, according to A.
Currently, the prototype uses 10 times as much power as a fluorescent bulb of similar luminance does.
Pepco's discount compact fluorescent bulb offer will run for three years.
When he switched on the compact fluorescent bulb attached to the meter, the spinning disc that records energy use - and your electric bill - rotated at a fairly leisurely clip.

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