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CHAPTER PAGE I The Earth the Atmosphere and the Ether
Matter and Electrons
Magnetism and Magnetic Strains in the Ether
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adjusted aerial circuit alternating current ammeter amperes apparatus armature arrangement atmosphere atoms battery buzzer charged closed circuit conductor connections consists copper coupling coil crystal detectors current flows decrease decrement degree of coupling depends dielectric difference of potential direct current direction distance earth ebonite electric strain electrons ether waves galvanometer glass high frequency increase induction coil inductive effects insulated interlinked iron joined in series joules magnetic field magnetic lines magnetic strain Marconi maximum metres natural wave length negative number of magnetic number of turns obtained ohms ordinary oscillating circuit oscillating currents plates Poldhu poles potentiometer primary circuit quenched spark radio-telegraphy receiver aerial receiving circuit resistance secondary circuit secondary coil sensitive shown in Fig shunt signals spark gap station surface switch take place Telefunken telegraphy telephone receivers terminals transformer transmitter tube tuning undamped waves vibration voltage volts wave length wavemeter wire wireless