Electrical Machines; Frictional Machines
المؤلف:
GEORGE A. HOADLEY
المصدر:
ESSENTIALS OF PHYSICS
الجزء والصفحة:
2025-11-30
408
In the early forms of electrical machines, the charge was developed directly by friction. The most convenient of these was the plate machine, which consisted chiefly of a glass disk mounted upon an axis and turned by a handle, the charge being produced by the friction of fixed rubbing pads. On account of the friction, this machine required a great deal of energy to run it, and partly for this reason it has nearly gone out of use.
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