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What are the uses of LED in science

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An LED, or light-emitting diode, is a special type of diode that emits light when CONNECTED in a CIRCUIT. A diode is an electronic device that has two electrodes arranged in such a manner as to allow electrical current to flow in one direction only. With its ability to control the flow of electrons, a diode is often USED as a rectifier, which is a device that converts alternating current into DIRECT current. Alternating current is an electric current that flows first in one direction and then in the other. Since alternating current fed into a diode can MOVE in one direction only, the diode converts the current to a one-way flow known as a direct current.



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