indirect illumination


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Related to indirect illumination: direct illumination

indirect illumination

Battlefield illumination provided by employing searchlight or pyrotechnic illuminants using diffusion or reflection. a. Illumination by diffusion: Illumination of an area beneath and to the flanks of a slightly elevated searchlight or of pyrotechnic illuminants, by the light scattered from atmospheric particles. b. Illumination by reflection: Illumination of an area by reflecting light from low cloud. Either or both of these effects are present when a searchlight is used in defilade or with its beam spread to maximum width.
Dictionary of Military and Associated Terms. US Department of Defense 2005.
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The lighting consists of a ratio of 70 percent direct and 30 percent indirect illumination, which reduces glare when the cafeteria is used for a training session or meeting.
The area subjected to direct illumination is almost exactly half the planet; but because of atmospheric and other effects that extend the reach of indirect illumination, the area of the planet covered by either direct or indirect illumination amounts to slightly more than half the surface (D.
The irradiance cache (IR) is a collection of points in 3D space (a point cloud) along with the computed indirect illumination at those points.
Not a biography, history or literary analysis, yet something of each, White Heat amply demonstrates that indirect illumination sometimes casts the brightest light." JOEL BROUWER
-- Indirect illumination -- engineers can now introduce more accurate light effects into their designs, ensuring that light reflects properly off different geometry and scene backgrounds and illuminates areas previously left in the dark;
Amadea models can include either two 39W T5HO or two 54W T5HO lamps for indirect illumination, one 24W T5HO lamp for direct illumination, and a 7W incandescent lamp for night lighting, depending on the models selected.