SCIENCE 1120 CU 1

electronics

• generates a carrier wave
• any electronic device containing three electrodes
• science dealing with emission, behavior, and control of electrons
• combines audio-frequency wave and carrier wave to produce a modulated radio wave

vacuum tube

• thin, flexible metal disk covering box in a telephone mouthpiece
• combines audio-frequency wave and carrier wave to produce a modulated radio wave
• developed frequency modulation
• evacuated glass bulb in which an electric current flows across vacuum from cathode to anode

gas-discharge tube

• any device that converts AC to DC
• Geissler tube
• Crookes tube
• generates a carrier wave

cathode ray tube

• produced by impressing an audio-frequency wave upon a carrier wave
• Geissler tube
• Crookes tube
• glow caused by thermionic emission

thermionic emission

• produced by impressing an audio-frequency wave upon a carrier wave
• any electronic device containing three electrodes
• any electronic device containing two electrodes
• emission of electrons from a hot, glowing object

Edison effect

• glow caused by thermionic emission
• generates a carrier wave
• developed frequency modulation
• emission of electrons from a hot, glowing object

rectifier

• evacuated glass bulb in which an electric current flows across vacuum from cathode to anode
• developed frequency modulation
• combines audio-frequency wave and carrier wave to produce a modulated radio wave
• any device that converts AC to DC

triode

• amplitude modulation
• any electronic device containing three electrodes
• produced by impressing an audio-frequency wave upon a carrier wave
• any electronic device containing two electrodes

diode

• frequency modulation
• developed frequency modulation
• any device that converts AC to DC
• any electronic device containing two electrodes

diaphragm

• generates a carrier wave
• thin, flexible metal disk covering box in telephone mouthpiece
• emission of electrons from a hot, glowing object
• developed frequency modulation