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A fluorescent lamp, or fluorescent tube, is a low-pressure mercury-vapor gas-discharge lamp that uses fluorescence to produce visible light. An electric current in the gas excites mercury vapor, which produces short-wave ultraviolet light that then causes a phosphor coating on the inside of the lamp to glow.
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. The lamps use a tube that is curved or folded to fit into the space of an ...
Typical diameters are T12 or T38 (1+1⁄2 in or 38 mm) for larger, often less efficient lamps, T8 or T26 (1 in or 25 mm) for smaller and often energy-saving lamps, and T5 or T16 (5⁄8 in or 16 mm) for very small lamps, which may even operate from a battery-powered device. Fluorescent tube diameter designation comparison. Designation.
A new program, called She Ro, invites women at high risk from gun violence to come to the center four days a week for a year to learn ways to cope with trauma, anger and grief. Program developer ...
Lee Carsley ran into the first problems of his tenure as England's interim coach after a bold team selection backfired in a 2-1 home loss to Greece in the Nations League on Thursday. Erling ...
KYIV (Reuters) -One civilian was killed and four others injured in Russian shelling overnight on Ukraine's Sumy region on the border between the two warring countries, the local Ukrainian ...
An electrical ballast is a device placed in series with a load to limit the amount of current in an electrical circuit. A familiar and widely used example is the inductive ballast used in fluorescent lamps to limit the current through the tube, which would otherwise rise to a destructive level due to the negative differential resistance of the ...
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