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 412
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 Company 368… … Fig. 78. Center Span Strain Insulator Suspension FixtureCourtesy of General Electric Company Special fixtures for the large lighting units, such as the various typesof arc lights, are now available. Fig. 80 shows an enclosed arc lampfitted with a shade and a concentric diffuser. The effect of this…
Electrical engineering
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