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Magnetism and Electromagnetism 712
Elementary Electricity _ 1316
29 other sections not shown
adjustment airplane alternating current ammeter ampere-hour amperes ampliﬁer antenna circuit antenna inductance apparatus armature brushes buzzer capacitance cell charge choke coil condenser conductor connected copper core counter e. m. f. coupling current ﬂows curve cycles damped damped wave detector diagram direct current discharge dynamo dynamotor Edison electrical electrolyte electrons energy ﬁeld circuit ﬁg ﬁlament ﬁle ﬁrst ﬁxed ﬂat ﬂux frequency grid potential inch increase inductance coil insulated iron lead lines of force load loop magnetic ﬁeld maximum metal modulator motor negative normal ohms operation oscillations panel piece plane plate circuit plate current plate voltage pole positive primary radio receiving set resistance rheostat screw secondary set box shown in ﬁgure signals sketch soldering spark gap speed storage battery switch telephone terminals tion tool transformer transmitter tuning turns vacuum tube vary voltmeter volts wave length wave meter wave train wire