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 259
ductance 232 EADIOTELEPHONY and capacity thrown in series in the circuit. This isdone by the use of a spark gap. In figure 5, the source of high potential is charging thecondenser as shown in the diagram. The two terminals(electrodes) of the spark gap (they are usually metalplates) are also being… … this potential reaches a certain high value it is strongenough to cause a spark to jump across the air gap of thespark gap. The instant this spark passes, the air gapchanges its electrical character. Instead of being a verygood insulator it becomes a fairly good conductor. Thecondenser and…
Radio
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