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Fluorescence is simply defined as the absorption of electromagnetic radiation at one wavelength and its reemission at another, lower energy wavelength. Thus any type of fluorescence depends on the presence of external sources of light.
Apr 5, 2023 · Fluorescence is a phenomenon where certain materials rapidly (around 10 -8 seconds) emit light when they are exposed to specific types of electromagnetic radiation, typically ultraviolet (UV) light. Fluorescent materials are those that can exhibit this characteristic.
Mar 9, 2015 · The meaning of FLUORESCENCE is luminescence that is caused by the absorption of radiation at one wavelength followed by nearly immediate reradiation usually at a different wavelength and that ceases almost at once when the incident radiation stops; also : the radiation emitted.
the quality of absorbing light of a short wavelength and producing light of a longer wavelength: The mechanisms of fluorescence have applications in television, fluorescent lighting, and radiography. Fewer examples. They check the samples under a microscope for bright-green fluorescence.
Jul 18, 2024 · Fluorescence, emission of electromagnetic radiation, usually visible light, caused by excitation of atoms in a material, which then reemit almost immediately (within about 10−8 seconds). The initial excitation is usually caused by absorption of energy from incident radiation or particles, such as.
Fluorescence definition: the emission of radiation, especially of visible light, by a substance during exposure to external radiation, as light or x-rays.. See examples of FLUORESCENCE used in a sentence.
Jan 30, 2023 · Fluorescence, a type of luminescence, occurs in gas, liquid or solid chemical systems. Fluorescence is brought about by absorption of photons in the singlet ground state promoted to a singlet excited …
