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A light fixture (US English), light fitting (UK English), or luminaire is an electrical lighting device containing one or more light sources, such as lamps, and all the accessory components required for its operation to provide illumination to the environment. [1] All light fixtures have a fixture body and one or more lamps.
Electromechanical twilight switch. The most commonly used twilight switches are of the electromechanical type, which differ from electronic ones by the use of piloted relays already integrated in the circuit itself, and which allow small loads to be directly connected (for example, a single lamp).
Full-Tilt Boogie is a 1997 documentary film directed by Sarah Kelly that chronicles the production of the 1996 film From Dusk till Dawn. [ 1 ] It features extensive interviews with the cast and crew covering a variety of topics related to the film.
Outdoor Site-Lighting Performance (OSP) is a method for predicting and measuring three different aspects of light pollution: glow, trespass and glare. [60] Using this method, lighting specifiers can quantify the performance of existing and planned lighting designs and applications to minimize excessive or obtrusive light leaving the boundaries ...
As illustrated by a straight line on the chromaticity diagram, simple two-white blends will have a pink bias, becoming most severe in the middle. A small amount of green light, provided by another LED, could correct the problem. [38] Some products are RGBWW, i.e. RGBW with tunable white. [39] A final class of white LED with mixed light is dim ...
Twilight occurs according to the solar elevation angle θ s, which is the position of the geometric center of the Sun relative to the horizon. There are three established and widely accepted subcategories of twilight: civil twilight (nearest the horizon), nautical twilight, and astronomical twilight (farthest from the horizon).