Signalling Through Space Without Wires |
Contents
ROYAL INSTITUTION LECTURE ON THE WORK | 1 |
Hypothesis concerning the Nature of Vision | 16 |
2123 | 26 |
Copyright | |
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action aërial air-gap aluminium apparatus arrangement bad contact battery Branly Branly's carbon cause cells centimetres charged circuit coherer cohesion conducting conductor connected copper cylinder Daniell cell detecting detector discharge distance disturbance earth ebonite effect electric bell electric jerks electric radiation electric vibrations electric waves electrical influence electrical stimulus Electrician electrometer electrophorus electroscope elevated wire emits emitter employed excited feeble filings tube film galvanometer glass grid Hertz vibrator Hertz waves Hertzian waves impulses induction coil insulated knobs lecture Leyden jar light magnetic Marconi mechanical metal method of signalling microphone millimetre needle nerve observed ohms ordinary oscillations pair paraffin photo-electric Physical Society plate polarised potential Prof reflected relay resistance resonator respond Righi Ruhmkorff coil selenium sender shown shows Slaby's spark gap sphere surfaces surgings syntonic tapper-back tapping back telegraphic telephone terminals tinfoil tuning vacuum tube volts Voss machine Wheatstone bridge Wimshurst machine yards zinc