Gregg, J. B. [from old catalog] · Ada, Ohio, The University herald press · leaf 77
~2 (A-ZS) = F/. Use a bellows and an air reservoir connected to a rubber tube, tofurnish the current of air for the siren. LIGHT. EXPERIMENT 30. INTENSITY AND ABSORPTION. Method*—I. Intensity. Place a standard candle and thelight to be measured on opposite sides of the screen. Adjustthe carriage so… … Photometer. 2. Absorption. To find the per cent of light absorbed bywindow glass.—Find the candle power of a light with andwithout a plate of glass placed over the orifice of the photo-meter. Data.— I. (1.) Ds, the distance of the orifice near thestandard candle from the screen; (2.) D,.y the…
Physics
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