Journal of electricity, power, and gas . aced with one in which the essential fea-tures are eye-protection, artistic appearance, gooddiffusion, and economy.—The Editors.) This is a relatively small room 11 ft. x 10 ft—110sq. ft. ( m. x m.— sq. m.) used for read-ing, playing cards, writing, etc. Fig. 1 shows the old watt clear tungsten filament lamp is used, controlledby a pull switch in the base of the fixture. - Although the ceiling is white, the walls are ofdark green paper with a brown wainscoting, whichcauses the illumination efficiency to be relatively distribution i
Journal of electricity, power, and gas . aced with one in which the essential fea-tures are eye-protection, artistic appearance, gooddiffusion, and economy.—The Editors.) This is a relatively small room 11 ft. x 10 ft—110sq. ft. ( m. x m.— sq. m.) used for read-ing, playing cards, writing, etc. Fig. 1 shows the old watt clear tungsten filament lamp is used, controlledby a pull switch in the base of the fixture. - Although the ceiling is white, the walls are ofdark green paper with a brown wainscoting, whichcauses the illumination efficiency to be relatively distribution is good and the general effect pleas-ing. The intensity is sufficient for the conditions tobe met, yet it is not high enough for fine work, suchas sketching, etc., and it is planned to install a base-board receptacle near the desk and use a suitable locallamp at the desk when required. A suitable intensitycould be secured with a larger lamp in the centeroutlet, but from the standpoint of economy the first? scheme seems A Fixture Both Inartistic and Inefficient. lighting equipment a combination gas and electricmulti-arm chandelier, which was inadequate, as wellas unattractive. Three 50-watt clear carbon lampswith pressed glass shades were in use; the lampsbeing installed at angles of 45 degrees with the ver-tical and but 6 ft. 6 in. ( m.) above the floor, theywere controlled by key sockets. The glare was ex-treme ; there was practically no diffusion, and the dis-tribution very unsatisfactory, a condition which wasparticularly noticeable when one played cards onthe table located in the center of the room. The direc-tion of light was such as to place the faces of thecards into shadow. The fixture was replaced by a totally indirectunit (see Fig. 2) consisting of a one-piece mirroredglass reflector in a casing of an Egyptian design whichhas sand blasted finish and brushed brass high chain suspension is of such length as to bringthe lamp 7 ft. 3 in. (2
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Keywords: ., bookauth, bookcentury1800, bookdecade1890, booksubjectelectricity
