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fluorescence

Line breaks: fluor|es¦cence
Pronunciation: /flʊəˈrɛs(ə)ns
 
, flɔː-/

Definition of fluorescence in English:

noun

[mass noun]
1The visible or invisible radiation produced from certain substances as a result of incident radiation of a shorter wavelength such as X-rays or ultraviolet light.
Example sentences
  • The uralolite exhibits faint green fluorescence in shortwave ultraviolet radiation.
  • Any fluorescence under ultraviolet light may also provide clues to the identity and status of a gemstone.
  • A laboratory technician checked urine for ultraviolet fluorescence indicating the presence of riboflavin.
1.1The property of absorbing light of short wavelength and emitting light of longer wavelength.
Example sentences
  • Other mutants displayed green fluorescence or lacked fluorescent properties.
  • No particularly strong fluorescence of calcite, especially by comparison with glass, has been noticed.
  • One of the main attractions of chlorophyll fluorescence is that it appears to give a measure of photosynthesis.

Origin

mid 19th century: from fluorspar (which fluoresces), on the pattern of opalescence.

Definition of fluorescence in:

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