Journal of electricity, power, and gas . rgood distribution can be secured. Yard lighting is another field in which the quartzlamp has proved satisfactory, the best results beingobtained by placing the lamps on poles at a heightranging from 40 to 70 ft. above ground. A number of small installations of street lightinghave been made in co-operation with business mensassociations, but the number has been restricted ow-ing to the lamp not being adaptable for alternating current or on series circuits. However, with the ad-vent of a lamp so adapted, there is no doubt that itwill become popular for t
Journal of electricity, power, and gas . rgood distribution can be secured. Yard lighting is another field in which the quartzlamp has proved satisfactory, the best results beingobtained by placing the lamps on poles at a heightranging from 40 to 70 ft. above ground. A number of small installations of street lightinghave been made in co-operation with business mensassociations, but the number has been restricted ow-ing to the lamp not being adaptable for alternating current or on series circuits. However, with the ad-vent of a lamp so adapted, there is no doubt that itwill become popular for this purpose. Lamps hung40 the sidewalk give fairly even illuminationover streets from 60 to 80 ft. wide. The color of the light afforded is often appreci-ated by the merchant for the contrast afforded be-tween it and the window illumination which bringsout the latter more prominently. An interesting example of lighting by the quartzlamp is that of lighthouses for the U. S. Govern-ment. The Light House Board has proved that this. Section Through Commercial Type of Quartz Lamp. lamp is excellent for ordinary light house color also affords light entirely distinctive andprevents the confusion of the lighthouse light with afixed white light ashore. Quartz lamps are now beingused to illuminate the memorial tower of the SeamensInstitute near Brooklyn Bridge, New York City, andthe light, which is the only green one on the coast,has been designated and charted as an official lightby the light house department. Naturally, with the high efficiency lamp the ques-on of maintenance is an exceedingly important the case of the quartz lamp the replacement of theburner is practically the one item entering into thisaccount, and when a burner is broken or loses itsvacuum it is not necessary to purchase a new oneas, this one can be refilled, and there is always somescrap value for the old burner. As far as can be as-certained from the figures available at the presenttime,
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Keywords: ., bookauth, bookcentury1800, bookdecade1890, booksubjectelectricity
