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 52
ion of the induced lightning in our electriccircuit we can calculate its voltage, and from the voltageof this induced lightning in our circuits, which was pro-duced by the electric wave sent out by the lightning flashin the clouds, we can calculate back the voltage or electricpressure of this… … Copyright, InternationalONE INCH SQUARE RADIO SETAlfred Giovanni, a fourteen-year-old freshman in the United HighSchool at Knoxville, Pa., with his one inch square radio receivinginstrument, probably the smallest of its kind in the world. The instru-ment is capable of picking up radio messages for…
Radio
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
