fluorescence
- n light emitted during absorption of radiation of some other (invisible) wavelength
fluorescence microscopy
- n light microscopy in which the specimen is irradiated at wavelengths that excite fluorochromes
fluorescent dye
- n a yellow dye that is visible even when highly diluted; used as an absorption indicator when silver nitrate solution is added to sodium chloride in order to precipitate silver chloride (turns pink when no chloride ions are left in solution and negative fluorescein ions are then absorbed)
fluorescent fixture
- n a lighting fixture that uses a fluorescent lamp
fluorescent lamp
- n lamp consisting of a tube coated on the inside with a fluorescent material; mercury vapor in the tube emits ultraviolet radiation that is converted to visible radiation by the fluorescent material
fluoridation
- n the addition of a fluoride to the water supply (to prevent dental decay)
fluoridisation
- n the addition of a fluoride to the water supply (to prevent dental decay)