Small, Sidney Aylmer, 1876- [from old catalog] · Chicago, F. J. Drake & co · leaf 24
epieces. Any of these tests done in a very dark room will show STATIC ELECTRICITY 25 faint sparks. The hard rubber slides of the plate holderof a camera, if pulled out suddenly on a dry day maymake such a spark that you can hear the crackling noiseabove the sound made by the slide itself. 4.… … Fig. 5. Attraction due to Static Electricity. 6. Evaporation. The evaporation of a liquid from itssurface, when that surface is roughened by waves, pro-duces electrification. This is one of the ways that theatmosphere is kept charged relatively to the earth. Infair weather it is always positive to…
Electricity
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