The outlines of physics: an elementary text-book (1897)
Nichols, E. L. (Edward Leamington), 1854-1937 · New York, The Macmillan Company; London, Macmillan & Co., Ltd. · leaf 227
(1) The wooden support described in Art. 38. (2) A strip of wood about 60 cm. long, 2 or 3 cm. wide, and 1 cm.thick. (3) A piece of hard rubber (vulcanite) about 30 cm. long (an ordi-nary black rubber ruler or straightedge will do); a glass rod or tubeabout 30 cm. long and 2 cm. in diameter; a… … Fig. 173. Fig. 174. (6) Rub the vulcanite ruler vigorously with the catskin and bringit near one end of the balanced strip, first above, then below the lat-ter, then on either side. Note the attractive force between the wood and the vulcanite. (c) Rub the glass rodwith the silk handkerchiefand…
Physics
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