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 294
he lengths of the linesah, a V, and ab represent the energy received at the wavelengths 1,120, 1,200, and 1,280, respectively, when the MIRACLE OF THE AGE 267 coupling is correct. The length of the lines ac, ac, andac represents the energy received at the same wavelength when the coupling is too… … Coup//na too c/ssc Coupling too loose 1120 1200 1260 Wave Length FiaZGrb c
Radio
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