phos·pho·res·cence (f s f -r s ns)n. 1. Persistent emission of light following exposure to and removal of incident radiation. 2. Emission of light without burning or by very slow burning without appreciable heat, as from the slow oxidation of phosphorous: "He saw the phosphorescence of the Gulf weed in the water" (Ernest Hemingway). phos pho·rescent adj.phos pho·rescent·ly adv. |
phosphorescence [ˌfɒsfəˈrɛsəns]
n
1. (Physics / General Physics) Physics
a. a fluorescence that persists after the bombarding radiation producing it has stopped
b. a fluorescence for which the average lifetime of the excited atoms is greater than 10-8 seconds
2. (Physics / General Physics) the light emitted in phosphorescence
3. (Chemistry) the emission of light during a chemical reaction, such as bioluminescence, in which insufficient heat is evolved to cause fluorescence Compare fluorescence
| phosphorescence (fsf-rsns) 1. The emission of light by a substance as a result of having absorbed energy from a form of electromagnetic radiation, such as visible light or x-rays. Unlike fluorescence, phosphorescence continues for a short while after the source of radiation is removed. Glow-in-the-dark products are phosphorescent. Compare fluorescence. 2. The light produced in this way. |
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. | phosphorescence - a fluorescence that persists after the bombarding radiation has ceased fluorescence - light emitted during absorption of radiation of some other (invisible) wavelength |
Translations
How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content.
| ?Page tools | ||
|---|---|---|
|