"Photons" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus,
MeSH (Medical Subject Headings). Descriptors are arranged in a hierarchical structure,
which enables searching at various levels of specificity.
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)
| Descriptor ID |
D017785
|
| MeSH 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
|
| Concept/Terms |
|
Below are MeSH descriptors whose meaning is more general than "Photons".
Below are MeSH descriptors whose meaning is more specific than "Photons".
This graph shows the total number of publications written about "Photons" by people in this website by year, and whether "Photons" was a major or minor topic of these publications.
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| Year | Major Topic | Minor Topic | Total |
|---|
| 2002 | 1 | 0 | 1 |
| 2008 | 0 | 1 | 1 |
| 2009 | 0 | 1 | 1 |
| 2011 | 1 | 0 | 1 |
| 2012 | 0 | 1 | 1 |
| 2016 | 1 | 0 | 1 |
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Below are the most recent publications written about "Photons" by people in Profiles.