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To my knowledge, there is no Liquid Emitting Diode. There is a thing called Light Emitting Diode (a tiny thing with two terminals). When connected to a small electric current, the gadget emits light (of many colours, of course). Car makers also use this kind of device to make tail lights in modern cars.

Recently electrical equipment manufacturers have introduced household lighting bulbs utilizing LED technology. These bulbs are more energy-efficient than CFL bulbs.

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11y ago

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