thermionic emission
Synonyms
Hypernyms
Examples
Electrons, however, could not pass in the reverse direction because the plate was not heated and thus not capable of thermionic emission of electrons.
Cold electrodes can also spontaneously produce electron clouds via thermionic emission when small incandescent regions (called cathode spots or anode spots) are formed.
The negative electrostatic field created by the grid in the vicinity of the cathode would inhibit thermionic emission and reduce the current to the plate.
The heater is electrically isolated from the surrounding cathode and simply serves to heat the cathode sufficiently for thermionic emission of electrons.
The increased thermal motion of the metal atoms "knocks" electrons out of the surface, an effect called thermionic emission.
They use electronic conduction in the solid state as opposed to the gaseous state or thermionic emission in a high vacuum.