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A text-book on sound (1908)

Barton, Edwin H. (Edwin Henry), b. 1858 · London, Macmillan and Co., limited · leaf 649

An illustration from A text-book on sound, 1908, leaf 649
e Held. Hence, in thatc.isc, the gain in making // Large would be balanced by aconsequent diminution of h for a given current. But thislimit is not reached with ordinary steel magnets, hencetheir value in the instrument, 640. Edisons Carbon Transmitters.— The first carbontransmitter constructed by… … t r Ki<;. 100. Edisons Carbon Transmitter. function of the transmitter, by the variation of its own resistance, to vary the current thus independently produced.How it does this may easily he seen from Fig, 10(5. The sound waxes pass through the mouthpiece M, fall uponthe vibrating plate I),and…

Sound

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