Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 411
Fig. 75. Indirect Lighting Fixture witii Part Cut Away to Show Position of Reflector Courtesy of National X-Ray Reflector Company … METALBAND ^^EYE-COMFORTREFLECTOR.^OP/JLGLmSDIFFUSFR ■OLffSS BOWL.Fig. 77. Diagram Showing Method ofGetting Semi-Indirect Effect by Useof Extra Diffusing ShadeCourtesy of National X-Ray ReflectorCompany Fig. 76. Indirect CeiUng Fix-ture with Semi-IndirectEffectCourtesy of National X-RayReflector…
Electrical engineering
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