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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82
WIRELESS TELEGRAPHY
transformer or induction coil creates a magnetic field which
induces oscillating currents in the other two coils and con-
sequent waves in the aerial whose strongest exertions will
lie in a plane determined by the third coil. Changing the
position of the latter will send the messages in any direction
desired.