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Page:Wireless Telegraphy and Telephony (1908, Massie and Underhill).djvu/36

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24
Wireless Telegraphy

turns of the inductance coil common to both circuits. When the two circuits are adjusted to the same frequency, the discharge of the Leyden jars, through the few turns of wire in the inductance, will induce oscillations in the

Fig. 10.—Method of Suspending Antenna between Masts of Vessels.

antenna, which in turn cause the disturbance in the magnetic field of the earth.

There are several means by which it may be determined when the two circuits are in harmony with one