Radio, miracle of the 20th century ... a story of human achievement that stands unrivalled in the history of humanity, together with a colorful portrayal, giving a broad, general view of the whole subject of wireless telegraph and telephone and its marvelous development (1922)
Drinker, Frederick E. [from old catalog], Lewis, James G., [from old catalog] joint author · [Philadelphia, Printed by National publishing co.] · leaf 70
are tech-nically described as being in resonance. Just so the radiowaves have a definite number of vibrations per secondand in order to hear a certain station the receiving equip-ment must be put in resonance with the waves radiatedby the transmitter. This is properly called tuning. An electrical… … XL H J 5o%o HP <tj ft O o 5< o H <DO cP bc.S- u c ^3-m O (H o B- beo to l| ni
Radio
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
