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Page:Wireless Telegraphy and Telephony (1908, Massie and Underhill).djvu/31

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The Apparatus Used
19

by a “muffler” to deaden the noise. The muffler is shown in Fig. 6, and is provided with peep holes, in which glass or mica is set, in order that the operator may at all times be able to watch the condition of the “spark.”

10. Production of Oscillatory Discharge

In Fig. 7 is shown the induction coil, Leyden jars, and spark-gap properly connected to produce the oscillatory

Fig. 7.—Connections of Apparatus to Produce the Oscillatory Discharge.

discharge. This takes place in the following manner. In Art. 7 we explained how, by means of the induction