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Photons MeSH Descriptor Data 2023


MeSH Heading
Photons
Tree Number(s)
G01.249.705
G01.358.500.505.650.782
G01.590.540.782
G01.750.250.650.782
G01.750.770.578.782
Unique ID
D017785
RDF Unique Identifier
http://id.nlm.nih.gov/mesh/D017785
Annotation
elementary particles; IM
Scope Note
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)
Public MeSH Note
94; was see RADIATION 1985-1993
Online Note
use RADIATION to search PHOTONS 1985-93
History Note
94; was see RADIATION 1985-1993
Date Established
1994/01/01
Date of Entry
1993/06/04
Revision Date
2011/06/24
Photons Preferred
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