Theory and practice of the electric telegraph; a manual for operators and students (1875)
Churchill, Charles Henry, d. 1904. [from old catalog] · Oberlin, Ohio, Sherman & bros. · leaf 41
with great rapidity very close to the otherwhich is stationary. The stationary plate is charged nega-tively at one or two points by striking it with cats fur. Therevolving plate is charged by induction from the stationaryone and its electricity may be taken off by means of a row ofpoints, as in the… … Elcctrophorous. The electrophoresis consists ot a cake of resin, shell-lac or ebonite, cast in a shallow plate of tin or iron E, and a movable tin cover T ./Which has a glass handle G. 3. How i> itcharge:!? If the cover is removed and theresin struck a few times with catsfur or flannel, the cake…
Telegraph
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