Philips has designed its new 40-Watt LED lightbulb to resemble a traditional incandescent bulb, while saving significant energy and lasting up to 25,000 hours.Traditional incandescent bulbs continue ...
Thomas Edison's 1879 incandescent lamp. (The Associated Press) For the past few years we've all been encouraged to embrace compact fluorescent (CFL) and light-emitting diode (LED) light bulbs because ...
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