Handbook of the Collections Illustrating Radio Communication: Its History and Development |
Common terms and phrases
aerial circuit alternating current anode anode voltages apparatus applied battery beam bulb carbon carrier wave cathode cent characteristics coherer coil condenser connected continuous wave coupling crystal cycles detector device diaphragm diode direction disc discharge effect efficiency electric electrodes electrolytic detector electromagnetic emission employed enabled evacuated experiments Fessenden filament frequency amplifiers grid Hertz heterodyne high frequency high frequency alternator improved increased inductance insulated inter-electrode capacity introduced ionization later limited Lodge loudspeaker low frequency magnetic Marconi Marconi's Wireless Telegraph method metres microphone miles modulation moving-coil obtained oscillations output patented pentode picture plate Poldhu Poulsen arc produced radar radiation radio communication range receiving valve reception rectified reflector reproduction resistance resonance rotating screen screen-grid valve sensitive short-wave signals spark gap speech stage stations superheterodyne supply Telefunken telephone television thermionic valve transformers transmission transmitter triode tube tungsten valve amplifier volume control wavelengths wavemeter wire