File:Compact Fluorescent Light Bulb.jpg
From Global Warming Art
This is a photograph of a compact fluorescent light bulb (CFL) in the common "swirl" design, consisting of a long twisted tube coated in phosphor and an electronic ballast (extending below the image) to generate a constant current.
Compact fluorescent bulbs are designed to replace incandescent light bulbs. CFLs use approximately 1/4 the energy as incandescent bulbs and have typical lifetimes that are 10 times longer.  The energy savings of CFLs, if widely used, have a significant potential to reduce electric consumption. Unlike incandescent bulbs, CFLs become dimmer by 20-30% during their lifetime, and may have a different color rendering than incandescent lighting.
Like all fluorescent lamps, CFLs contain small amounts of mercury, typically ~5 mg. Users are encouraged to recycle old CFLs and to handle broken CFLs with care (see: EPA disposal and handling guidelines). In most jurisdictions, individual bulbs may be disposed of with ordinary garbage without exceeding the local concentration threshold for hazardous waste, though there is still concern over mercury leaking from accumulated CFLs in landfills.
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|current||23:56, 25 November 2007||873×962 (287 KB)||Robert A. Rohde|
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|Software used||Adobe Photoshop CS2 Windows|
|File change date and time||16:37, 30 November 2005|