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Physics #1
Accelerated Christian Edu. PACE 1120 for misc. definitions
Term | Definition |
---|---|
Vacuum Tube | Evacuated glass bulb in which an electric current flows across vacuum from cathode to anode. |
Geissler Tube | Gas-discharge tube. |
Crookes Tube | Cathode ray tube. |
Thermionic Emission | Emission of electrons from a hot, glowing object. |
Edison Effect | Glow caused by thermionic emission. |
Rectifier | Any device that converts AC to DC. |
Diaphragm | Thin, flexible metal piece covering box in telephone mouthpiece. |
Modulated Radio Wave | Produced by impressing an audio-frequency wave upon a carrier. |
Transmitter | Generates a carrier wave. |
Modulator | Combines audio-frequency and carrier wave to produce a modulated radio wave. |