Glossary

Terms that are in use on this site.

There are 111 entries in this glossary.

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Term	Definition
HIGH INTENSITY DISCHARGE LAMP	An arc passing between two electrodes in a pressurized tube causes metallic additives to vaporize and produce light; HID lamps have a longer life and provide more lumens (light) per watt than many other light sources; available in mercury vapor, metal halide, and high/low pressure sodium.

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