Review of reviews and world's work . ucing the blue, and since the red sourcecontains none of these there will be no re-flection and the body will appear black. Inthe dark there is no color. We see objectsby the light reflected from them. In depart-ment stores white goods are often displayedon the same floor as dark woolen goods. Inthis case, if the intensity of the light is thesame throughout the store, the section con-taining the dark goods will appear poorlylighted as compared to the section containingthe white, because black absorbs light, whilewhite reflects it. This absorption of light a
Review of reviews and world's work . ucing the blue, and since the red sourcecontains none of these there will be no re-flection and the body will appear black. Inthe dark there is no color. We see objectsby the light reflected from them. In depart-ment stores white goods are often displayedon the same floor as dark woolen goods. Inthis case, if the intensity of the light is thesame throughout the store, the section con-taining the dark goods will appear poorlylighted as compared to the section containingthe white, because black absorbs light, whilewhite reflects it. This absorption of light ac-counts for the fact that black clothes arewarmer in summer than white clothes. This property of reflecting, or rather ab-sorbing light, is shown in the followingtable, which gives the percentage of the totalincident light that is reflected: Mirror !).. White blotting paper 82. Chrome yellow ()2. Orange r)0. Yellow 40. Pink , . 30. Emerald green 18. Dark brown 1:?. Vermilion 12. Black paper Deep chooorate Black velvet MCHT ILLU-Ml NATION OF THE SINGER TOWER,NEW YORK CITY. If we to transmit white lightthrough a red glass only the red rays will betransmitted, the others being absorbed by theglass. Instead of getting all the energy ofthe light we get only that part included inthe red ray. It was formerly the custom to blame theoil, or the gas, or the electricity if there weredark shadows in the room or if the lightfailed to dispel the evening darkness. Nowthe illuminating engineer has proved thatthese same rooms, be it at the home, or theoffice, or the store, can be made almost aslight as day with even less candlepower thanbefore, all with a little study and planning. A wall-paper which will absorb lightis the greatest enemy to artificial light in the 336 THE AMERICAN REl^lLlV OF REI^IEIVS.
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Keywords: ., bookcentury1800, bookdecade1890, bookidreviewofrevi, bookyear1890
