The Principles of Electric Wave Telegraphy |
Contents
PART I
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1 |
other Obstacles Atmospheric Electric Discharges Means of obviating
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9 |
HIGH FREQUENCY ELECTRICAL MEASUREMENTS
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111 |
15 other sections not shown
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Common terms and phrases
aerial wire alternating current amplitude antenna apparatus arrangement capacity centimetres Chap charge coherer condenser circuit conductor connected consisting copper wire coupled cymometer cymoscope damping detector diameter dielectric constant dielectric strength direction disc discharge distance ebonite effect electric force electric oscillations electric waves Electrician electrolytic detector electromagnetic electromotive force employed energy equal equation formula G. W. Pierce galvanometer given helix Hence Hertz high frequency increase induction coil insulated iron Leyden jar logarithmic decrement loop magnetic force Marconi maximum value measured metal method metres obtained ohms oscillation circuit oscillation constant oscillation transformer oscillatory circuit period placed platinum Poldhu potential difference primary circuit quantity radiation radiotelegraphic ratio receiving antenna resonance curve secondary circuit shown signals spark balls spark gap spark length spark resistance spiral station surface syntonic telephone terminals transmitter tube vector velocity vertical voltage volts wave length wireless telegraphy