Wireless Telegraphy and Telephony
Forfatter: Alfred P. Morgan
År: 1917
Forlag: The Norman W. Henley Publishing Company
Sted: New York
Udgave: Third Edition, Fully Illustrated
Sider: 33
UDK: 621.396.1 Mor
A practical Treatise on Wireless Telegraphy and Telephony, giving Complete and Detailed Explanations of the Theory and Practice of Modern Radio Apparatus and its Present Day Applications, together with a chapter on the possibilities of its Future Development
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Fig. 6.—Navy type of Leyden jars. Coated with copper deposited
upon the surface of the glass.
High frequency oscillations are the “pebbles” which,
dropped into the vast pool of ether, everywhere, set up “rip-
ples” called electromagnetic waves (identical with the elec-
tromagnetic waves of light, but longer and so beyond the
limits of our spectrum and the vision of the eye). The
manner in which this is accomplished may be explained by
saying that the charge creates a state of strain in the sur-
rounding ether, and then abruptly releases it. Ether pos-
sesses a high degree of elasticity, so that when the state of