. Practical wireless telegraphy; a complete text book for students of radio communication . Fig. 197b—Supersensitive Brown Amplification Relay. RECEIVING CIRCUITS, DETECTORS, TUNING APPARATUS. 171. Fig. 197c—Details Brown Relay. Like the first .type described, several of these relays may be connected in cascade forprogressive amplification of the incoming radio signals. 153. Atmospheric Electricity.—When the aerial wire of a radio station issuspended above the earth, it not only absorbs a certain amount of energy frompassing electric waves, but it will be set into oscillation by irregular disc
. Practical wireless telegraphy; a complete text book for students of radio communication . Fig. 197b—Supersensitive Brown Amplification Relay. RECEIVING CIRCUITS, DETECTORS, TUNING APPARATUS. 171. Fig. 197c—Details Brown Relay. Like the first .type described, several of these relays may be connected in cascade forprogressive amplification of the incoming radio signals. 153. Atmospheric Electricity.—When the aerial wire of a radio station issuspended above the earth, it not only absorbs a certain amount of energy frompassing electric waves, but it will be set into oscillation by irregular discharges ofso-called atmospheric electricity whichis termed throughout the United Statesstatic and in foreign countries at-mospherics or strays. During the spring, summer and autumnin th? northern zones of the United Statesthe potential of the air seems to be higherthan that of the earth and in consequencea discharge takes place through the aerialconductors to earth at irregular induced current causes a crackling,irregular sound of more or less intensityin the telephones of the receiving set whichmay interfere to a marked extent with therecpption of radio signals. Widely va
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecttelegra, bookyear1917
