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The Electron
LC Physics
Term | Definition |
---|---|
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. |