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Credit: Photo Researchers, Inc. /SCIENCE PHOTO LIBRARY


Caption: LED. Light emitting diodes (LEDs) are made of two thin film layers of semiconducting material impregnated with impurities that create opposite electrical properties. Passing an electric current through the LED makes it produce light. The colour of the light depends upon the semiconducting material used.

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Keywords: circuit component, coloured, device, diode, electroluminescence, electronic, electronics, gallium nitrate, led, leds, light, light emitting diode, non-integrated, object, pin, pins, semiconductor, still life, still-life, studio shot, technological, technology, technology equipment

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