Millikan, Robert Andrews, Gale, Henry Gordon · Boston : Ginn and Co. · leaf 485
Transmitting Station … Receiving Station Fig. 457. Transmitting and receiving stations for wireless telegraphy As long as the key A is kept closed (assuming a 500-cycle alternatorto be used), 1000 sparks per second occur at s, and therefore a regularseries of 1000 wave trains (Fig. 458) pass off from the aerial…
Physics
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