![]() ![]() The UV energy stretching across the lamp activates a phosphor, the white coating on the inside of the bulb, which emits visible light.Īre CFLs really good for the environment? The excited mercury produces most of its energy in the ultraviolet (UV) range. ![]() Once the mercury is excited, it carries the electrical current via an arc across the lamp to the other end. Electricity is applied to the electrode at the end of the lamp where it excites the mercury. How does a CFL bulb work? Ĭompact fluorescent lamps are arc discharge lamps that produce light by exciting mercury vapor. YES! For typical electrical rates in Pennsylvania (some of the lowest rates in the world) for example each retrofit CFL will save over $30 over its lifetime. When purchasing light bulbs you want to maximize the amount of light (measured in Lumens) and minimize the amount of electricity needed (measured in Watts). For home use purchase soft white compact fluorescent light bulbs to match incandescent output. They fit in conventional light sockets same as incandescent bulbs. In addition, because they use less energy, they are better for the environment. They save you money in the long run and you do not have to change them as often. 13 Potential problems with fluorescents (including CFLs)įrequently Asked Questions about CFLs Why use compact fluorescent light bulbs? Ĭompact Fluorescent Light bulbs (or CFLs) use less energy and last longer than conventional incandescent bulbs.10 What should I do if I break a compact fluorescent light bulb?.9 Do CFL bulbs flicker and buzz like the fluorescent lights in old buildings?.7 Can I use CFL bulbs if I will be turning the lights on and off frequently?.6 Are CFLs really good for the environment?.2 Why use compact fluorescent light bulbs?. ![]() 1 Frequently Asked Questions about CFLs. ![]()
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