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Set Lighting Technician's Handbook, 4th Edition by Harry Box

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CHAPTER

Light fixtures: The HMI arsenal

8

METAL HALIDE ARC LIGHTS: “HMI”

Unlike a filament lamp, a metal halide arc lamp, commonly know as an HMI,1 generates light by creating an electrical discharge between two electrodes held a short distance apart from one another within a quartz envelope. The lamp produces a color spectrum of daylight-balanced light—5600 or 6000 K, depending on the globe manufacturer. Manufacturers have developed a full range of light fixtures that use metal halide arcs lamps, including: Fresnel fixtures, pars, beam projectors, follow spots, open-face lights, softlights, moving lights, ellipsoidal spot lights, lantern lights, underwater light, and small battery-powered sunguns, as well as other unique fixtures. ...

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