Concept information
Preferred term
Photons
Type
-
mesh:Descriptor
Definition
- Discrete concentrations of energy, apparently massless elementary particles, that move at the speed of light. They are the unit or quantum of electromagnetic radiation. Photons are emitted when electrons move from one energy state to another. (From Hawley's Condensed Chemical Dictionary, 11th ed)
Broader concept
Allowable Qualifier(s)
In other languages
-
French
URI
http://data.loterre.fr/ark:/67375/JVR-W1TBC07S-N
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