2013年3月28日星期四

New Reasons to Change Light Bulbs



People sometimes have trouble making small sacrifices now that will reward them handsomely later. How often do we ignore the advice to make a few diet and exercise changes to live a longer, healthier life? Quetsol Solar Kit to Light Up Guatemala Hinterland.Or to put some money aside to grow into a nest egg? Intellectually, we get it - but instant gratification is a powerful force. You don't have to be one of those self-defeating rubes. Start buying LED light bulbs.You've probably seen LED flashlights, the LED "flash" on phone cameras and LED indicator lights on electronics. But LED bulbs, for use in the lamps and light sockets of your home, have been slow to arrive, mainly because of their high price: their electronics and heat-management features have made them much, much more expensive than other kinds of bulbs. That's a pity, because LED bulbs are a gigantic improvement over incandescent bulbs and even the compact fluorescents, or CFLs, that the world spent several years telling us to buy.LEDs last about 25 times as long as incandescents and three times as long as CFLs; we're talking maybe 25,000 hours of light. Install one today, and you may not own your house, or even live, long enough to see it burn out. (Actually, LED bulbs generally don't burn out at all; they just get dimmer.)

You know how hot incandescent bulbs become. That's because they convert only 5 to 10 percent of your electricity into light; they waste the rest as heat. LED bulbs are far more efficient. They convert 60 percent of their electricity into light, so they consume far less electricity. You pay less, you pollute less.But wait, there's more: LED bulbs also turn on to full brightness instantly. They're dimmable. The light color is wonderful; you can choose whiter or warmer bulbs. They're rugged, too. It's hard to break an LED bulb, but if the worst should come to pass, a special coating prevents flying shards.

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