Henry and Hora's modern electricity; a practical working encyclopedia (1915)
Henry, James. [from old catalog], Hora, Karel Jan, 1881- [from old catalog] joint author · Chicago, Laird & Lee, inc. · leaf 25
t the extremi-ties of the oscillation. It is tendency to motion, Kinetic energyis the result of actual motion. SILK OJSHfON COMB BRASS CYLINDER )=0 Friction machine 17. The oldesttype of these ma-chines is the cylinderelectric machine.A glass cylinder re-volves around itsaxis which is turnedFlG#… … ELECTRICAL ENGINEERING 25 part of the cylinder. On the other side there stands a brasscylinder, with a rod extending toward the glass cylinder andprovided with sharp points (like a comb), See fig. 2. Turning the handle we produce friction between the glassand the cushion, and thus a + charge on the…
Electrical engineering
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