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A compact fluorescent lamp (CFL), also called compact fluorescent light, energy-saving light and compact fluorescent tube, is a fluorescent lamp designed to replace an incandescent light bulb; some types fit into light fixtures designed for incandescent bulbs.
Fluorescent bulbs contain mercury, a toxic substance. The United States Environmental Protection Agency (EPA) provides safety guidelines for how to clean up a broken fluorescent bulb. [17] Mercury can be harmful to children and developing fetuses, so children and pregnant women should avoid being in the area whilst a broken bulb is cleaned up. [18]
Compact Fluorescent Lights (CFLs) CFLs are also a more energy-efficient option than incandescents — 75% more efficient. If every household in the U.S. replaced one incandescent bulb with a CFL ...
Some types contain a source of beta radiation to start ionization of the gas that fills the tube. [5] In some tubes, glow discharge around the cathode is usually minimized; instead there is a so-called positive column, filling the tube. [6] [7] [note 2] Examples are the neon lamp and nixie tubes. Nixie tubes too are cold-cathode neon displays ...
Rough service bulbs are available in sizes up to 200 watt in all varieties of fittings. Although lifetime is generally lower than for CFLs, they are replaced easily. But lighting should also be free from glare and highlights so as not to distract or even temporarily blind the user. Some skill is needed to meet the several criteria governing ...
They are divided into two main categories – primary, caused by overactivity or dysfunction in the pain-sensitive areas of the head, or secondary, where an underlying medical condition causes the ...