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LED floodlight. A light-emitting diode (LED) is based on a forward-biased semiconductor heterojunction. Recently-developed high-power white LEDs are beginning to be used for lighting and illumination applications (called solid-state lighting). Compared to conventional incandescent light bulbs, LEDs are much more efficient, durable, and have longer lifetime. Solid-state lighting is expected to eventually replace conventional incandescent and even fluorescent light bulbs. Shown here is a floodlight that produces 600 lumens of light from 16 W of electrical power and has a lifetime of 25000 hours. It is sold in the USA by Philips.
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TOP22291595
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達志影像
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RM
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