A Device for Measuring the Cut-Off Angle in Luminaires with Reflectors of Circular Symmetry (Pribor dlya Izmereniya Zashchitnogo Ugla Svetilnikov s Kruglosimmetrichnymi Otrazhatelyami),
ARMY FOREIGN SCIENCE AND TECHNOLOGY CENTER CHARLOTTESVILLE VA
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A device for measuring the cut-off angle in luminaires with reflectors of circular symmetry is discussed.
- Air Conditioning, Heating, Lighting and Ventilating