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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 340

An illustration from 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, leaf 340
y the antenna.Figure 54 illustrates the transfer of energy betweentubes II and III. The battery, B, furnishes a constantcurrent passing through K. This current divides, half ofit going through tube A and half of it through tube Dwhen both have the same resistance. If the resistance ofD is… … rent passing through K does not split 50-50, but, say,80-20, the larger part going through the D circuit. Whenthe resistance of D is increased the reverse of this takesplace, the larger current passing through A. A and Drepresent the tubes and K represents the low-frequencychoke coil of figure 52.…

Radio

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