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 238
ee of satisfaction. The element lacking for this is somesystem of amplifying the waves to make them more pow- MIRACLE OF THE AGE 211 erful and pronounced when they reach the receivingphones. The diagram shows such a circuit. Almost every article written on the principles of radiodescribe such a set…
Radio
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
