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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 A form of radiation that is visible to the human eye enabling sight. The light source is called radiant and is caused by one form of energy converted into radiation or radiant light. Related category    • LIGHTING TOPICS Also on this site: Encyclopedia of Science Transport Concepts & Designs (partner site) BACK TO TOP