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indirect illumination

akcenty
fiz. косвенное освещение
hutn. отражённое освещение
med. непрямое освещение
nanot. отражённое облучение
przestrz. рассеянный свет
techn. косвенное облучение; освещение отражённым светом
wojsk. косвенное освещение (поля боя); непрямое освещение (поля боя)
 Angielski tezaurus
indirect illumination
wojsk., logist. Battlefield illumination provided by employing searchlight or pyrotechnic illuminants using diffusion or reflection: 1. Illumination by diffusion: illumination of an area beneath and to the flank of a slightly elevated searchlight or of pyrotechnic illuminants, by the light scattered from atmospheric particles. 2. 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. (FRA)