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 166
mplitude thelouder the sound. The ear is especially adapted to re-ceive these vibrations and transform them into nervousimpulses. In its construction it is divided into three partsfor the purposes of simplified description. The outer ear consists of what the anatomists call theexpanded pinna—which… … T3<Vt-V DO c *M o~ Eg rf.2^ +5 <j Mb 5 ^ be fa *>.£ fa gg £ -^ H |.2 3 a-. fa _§^ >* s» fc Q ^ - fa e 2 gtwc £ & »«~ Pio o c oo (B C
Radio
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