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The Electron

LC Physics

TermDefinition
Thermionic Emission This is the release of electrons from the surface of a hot metal.
Cathode Rays Streams of high speed electrons moving from the cathode.
The Electronvolt The amount of energy gained or lost by an electron when it moves through a potential difference of 1 V.
The Photoelectric Effect This is the emission of electrons from the surface of a metal when light of a suitable frequency strikes the metal.
Threshold Frequency This is the minimum frequency of light that will cause the photoelectric effect for a given metal. The photoelectric effect will not occur below this frequency.
Work Function This is the minimum energy needed to remove the loosest electron from the surface of the metal.
Photon Packet of electromagnetic energy.
X-rays High frequency electromagnetic radiation.
Created by: mduffy13
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