fluorescence
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AI overview
Fluorescence is when certain materials absorb invisible ultraviolet light and then emit visible light that we can see, which happens in everything from minerals and marine organisms to special clothing. This property matters because it has practical uses in theater productions, scientific research, and helps us understand how certain organisms naturally glow in their environments.
AI-generated from the Wikipedia summary — may contain errors.
Article
63 sectionsContents
- History
- Physical principles
- Mechanism
- Quantum yield
- Lifetime
- Jablonski diagram
- Fluorescence anisotropy
- Fluorescence
- Rules
- Kasha's rule
- Mirror image rule
- Stokes shift
- In nature
- Compared to bioluminescence and biophosphorescence
- Fluorescence
- Bioluminescence
- Phosphorescence
- Mechanisms
- Epidermal chromatophores
- Phylogenetics
- Evolutionary origins
- Adaptive functions
- Aquatic
- Photic zone
- Fish
- Sharks
- Coral
- Cephalopods
- Jellyfish
- Mantis shrimp
- Aphotic zone
- Siphonophores
- Dragonfish
- Terrestrial
- Amphibians
- Butterflies
- Parrots
- Arachnids
- Platypus
- Flying Squirrels
- Plants
- Abiotic
- Gemology, mineralogy and geology
- Organic liquids
- Atmosphere
- Common materials that fluoresce
- In novel technology
- Applications
- Lighting
- Analytical chemistry
- Spectroscopy
- Lasers
- Biochemistry and medicine
- Microscopy
- Other techniques
- Forensics
- Non-destructive testing
- Signage
- Optical brighteners
- See also
- References
- Further reading
- External links
thumb|right|Fluorescent minerals emit visible spectrum|visible light when exposed to [[ultraviolet.]] thumb|Fluorescent marine organisms right|thumb|Fluorescent clothes used in black light theatre production, [[Prague]]
Fluorescence is one of two kinds of photoluminescence, the emission of light by a substance that has absorbed light or other electromagnetic radiation. When exposed to ultraviolet radiation, many substances will glow (fluoresce) with colored visible light. The color of the light emitted depends on the chemical composition of the substance. Fluorescent materials generally cease to glow nearly immediately when the radiation source stops. This distinguishes them from the other type of light emission, phosphorescence. Phosphorescent materials continue to emit light for some time after the radiation stops. This difference in duration is a result of quantum spin effects.