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A · B · C · D · E · F · G · H · I · J · K · L · M · N · O · P · Q · R · S · T · U · V · W · X · Y · Z   entire Web this site light emitting diode (LED) A semiconductor light source. LEDs can produce a very bright light for a small amount of power. They are used in many applications e.g. car break lights, traffic lights, but white colored LEDs are a relatively new technology. Related category    • LIGHTING TOPICS Also on this site: Encyclopedia of Science Transport Concepts & Designs (partner site) BACK TO TOP