Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 394
le-power. Fig. 39 gives thedistribution curves for the50-candle-power unit.Similar incandescentlamps are now beingmanufactured by othercompanies. Table 5 gives desirabledata in connection withthe use of the Meridianlamp. By means of the Weber,or some other form ofportable photometer, curves as… … Fig. 38. Lif,ht Intensity in Candie- feet. No. 1 Lamp (60 Watts) No. 2 Lamp (120 Watts) Wattsper Sq. Ft.of AreaLightedWithEitherLamp. Class Service. HeiKhtofLamp andDiameterof Uni-formlyIvightedArea. 2.9 feet. 3 5 4 Distancebetween LampsWhen Two or Moreare Used. HeiKhtofLamp andDiameterof…
Architecture · Building · Carpentry
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
