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 272
resented by a figure no larger than MIRACLE OF THE AGE 245 a pencil dot. Figure 12 does not show the action in thecharging voltage after the spark gap has broken down. A radiating circuit arranged as shown in figure 11radiates a great amount of energy, but it radiates a broadwave. This statement… … represented by the length of the line ab; but in additionto that wave, there is a continuous band of waves havingall possible wave lengths near the wave length of 300.Thus the wave whose length is 200 is radiated with anenergy represented by the length of the line cd. Now,as only the energy…
Radio
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