fluorescent bulb

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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 ?
that the CFL failed to warn them of the long-term medical risks associated with repetitive head impacts; and
Energy Star also reports that at an average price of $2 to $3 per CFL, the typical payback is about seven months.
Supported by increase in customer base, revival of the economy and addition of new high margin clients, CFL witnessed improvement in operating revenue and operating margins in 2009-10.
The page also contains new training tools developed by CPPD for CFLs, such as body composition assessments, examples of proper form and technique for various exercises and a multimedia section entitled, "Improving your Physical Readiness Test Scores.
CFLs that are currently available reportedly have mercury levels in the range of 1.
A standard lamp fixture for the CFL bulbs fixed to the movable platform of the vibration table is shown in Fig.
Finally, there are a variety of commercial companies that provide CFL and fluorescent bulb disposal by mail.
CFL watts = Incandescent watts 9-13 = 40 13-15 = 60 18-25 = 75 23-30 = 100 30-52 = 150 30-53
We have identified two CFL recycling plants in Roorkee and Manesar.
The state department is distributing CFL, the eco-friendly appliance, free of cost in large numbers.
However, since electrical interference from the CFL ballast can reduce the operating range of your transmitter, they recommend always using an incandescent bulb.
CFL bulbs contain small amounts of potentially harmful mercury, which safe disposal keeps out of landfills.