LED的发展史及未来发展趋势.pdfVIP

The incandescent light bulb was downright amazing when it was invented in 1809 by Humphry Davy Keep clicking L.E.D.’s.Lights Because they use less power than standard incandescent bulbs, white LEDs have become common in flashlights The light bulb has been running out of friends recently Australia is banning them in 2010 California and Canada have decided to ban the sale of incandescent bulbs by 2012 A U.S. Senate committee is working on a proposal that would phase out the light bulb in 10 years The European Union is looking at banning them And in New Jersey, where the first practical incandescent bulb emerged from Thomas Edisons laboratory in , a bill has been introduced to ban their use in government buildings Banishing the dark gobbles up of the electricity generated in the United States Widespread use of LED lighting could cut consumption in Source: U.S. Department of Energy almost all of this electricity creates rather than light a typical 100-watt light bulb radiates roughly 95 watts into its surroundings as By 2027 , LED lighting could cut annual energy use by the equivalent of with the attendant reduction in emissions of carbon dioxide the gas believed to be responsible for global warming The absence of a filament and its surrounding