Tissandier, Gaston, 1843-1899, Frith, Henry, 1840-, Harry Houdini Collection (Library of Congress) DLC · London, New York [etc.] Ward, Lock & Co · leaf 403
46 LIGHT. included here the electric light, which has recently attractedso much attention, because this system of lighting canhardly be said to have yet penetrated the domain ofdomestic life ; but there is no doubt that electricity isbecoming more and more adapted to our daily life. … The soap-bubble. The measurement of intensity of light is called Pho-tometry, and the instruments used are Photometers. Bun-sens instrument consists of a screen of writing-paper,saturated in places with spermaceti to make it trans-parent. A sperm candle is placed on one side, and thelight to be…
Scientific recreations
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