Popular science monthly . lluminants byWall Treatment THE illumination of factories, rail-road terminals and departmentstores has been given great considerationof recent years; increased output, im-proved workmanship and a minimumof accidents having resulted in nearlyevery instance where better lighting sys-tems have been installed. In such places,wall treatment as a means for con-serving the illumination afforded bymodern illuminants has generally beenadopted. These advances have come asa result of practical observations, whichshow that the rays from powerful lights,falling upon dark brick or
Popular science monthly . lluminants byWall Treatment THE illumination of factories, rail-road terminals and departmentstores has been given great considerationof recent years; increased output, im-proved workmanship and a minimumof accidents having resulted in nearlyevery instance where better lighting sys-tems have been installed. In such places,wall treatment as a means for con-serving the illumination afforded bymodern illuminants has generally beenadopted. These advances have come asa result of practical observations, whichshow that the rays from powerful lights,falling upon dark brick or stone walls,give less light to a room than the raysfrom less powerful lights falling uponsimilar walls that have been painted inlight colors with dust-resisting, wash-able paints. From the standpoint ofeconomy it is of interest to record thefact that the monthly cost of illuminantsfor lighting dark-walled factories maybe enormously reduced by the occasionalapplication of such paintsand the workers willappreciate it ll 1 uuk a 1 liiii^h I il , ol tCal ti i t < -iiM i U 1 1 in . 1 iuilding and Advertise the F,k t , Tennessee, Considers Coal to be One of Her Greatest Natural Resources Popular Srioire MoiilJiIi/ 3(1:5
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectscience, bookyear1872
