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Descriptor English: Photons
Descriptor Spanish: Fotones
Descriptor Portuguese: Fótons
Descriptor French: 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
RDF Unique Identifier: https://id.nlm.nih.gov/mesh/D017785
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)
Annotation: elementary particles; IM
Allowable Qualifiers: AE adverse effects
CL classification
HI history
TU therapeutic use
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
DeCS ID: 31183
Unique ID: D017785
Documents indexed in the Virtual Health Library (VHL): Click here to access the VHL documents
Date Established: 1994/01/01
Date of Entry: 1993/06/04
Revision Date: 2011/06/24
Photons - Preferred
Concept UI M0026875
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)
Preferred term Photons



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