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Contents
Fixtures in boxes to take home 740 Chimneys Influence of Tests 943 | 12 |
Compressed gas Use of 535 | 34 |
Organization and conduct of a new Gas and electricity compared 1043 | 44 |
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acetylene amount amperes angle arc lamps arc light bracket burning candle power candle-power carbon ceiling cent central station chandelier color consumer cost curve diffusing distance distribution effect efficiency elec electric lamp electric light enclosed arc energy feet filament fixture foot-candles gas lighting gas mantle give given glass globe heat Hefner Holophane horizontal illu illuminating engineer incan incandescent lamps inches increase installation intensity inverted burner light source lower luminous luminous arc magnetite mantle manufacture mean spherical measurements ment mercury metal meter method mination Nernst lamp obtained opal ordinary paper pentane photometer placed plane practical present pressure prismatic produced question radiation rays reflection reflector shade shown in Fig side source of light standard street lighting surface tantalum temperature tion tric tube units vapor voltage volts watts Welsbach