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nouna negatively charged electrode that is the source of electrons entering an electrical deviceOpposite:
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nounthe positively charged terminal of a voltaic cell or storage battery that supplies currentOpposite:
Definition that contains cathode
- screen the display that is electronically created on the surface of the large end of a cathode-ray tube
- grid an electrode placed between the cathode and anode of a vacuum tube to control the flow of electrons through the tube
- crt a vacuum tube in which a hot cathode emits a beam of electrons that pass through a high voltage anode and are focused or deflected before hitting a phosphorescent screen
- electrophoresis the motion of charged particles in a colloid under the influence of an electric field; particles with a positive charge go to the cathode and negative to the anode
- phosphor a synthetic substance that is fluorescent or phosphorescent; used to coat the screens of cathode ray tubes
- triode a thermionic vacuum tube having three electrodes; fluctuations of the charge on the grid control the flow from cathode to anode which makes amplification possible
- kinescope a cathode-ray tube in a television receiver; translates the received signal into a picture on a luminescent screen
- philipp lenard German physicist who studied cathode rays (1862-1947)
- dielectrolysis the motion of charged particles in a colloid under the influence of an electric field; particles with a positive charge go to the cathode and negative to the anode
- magnetron a diode vacuum tube in which the flow of electrons from a central cathode to a cylindrical anode is controlled by crossed magnetic and electric fields; used mainly in microwave oscillators