why are l.e.d. lights used mainly for lighting today ?
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Answer:
LEDs, which stand for Light Emitting Diodes, burn light 90 percent more efficiently than incandescent bulbs. LEDs work by passing an electrical current through a microchip, which causes tiny light emitting diodes to illuminate. The resulting light is what we get when we flip the switch.
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Answer: Because they can glow even the current is low.
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