Phosphorescence - Wikipedia
网页Phosphorescence is a type of photoluminescence related to fluorescence. When exposed to light (radiation) of a shorter wavelength, a phosphorescent substance will glow, absorbing the light and reemitting it at a longer wavelength.
What Is Phosphorescence? Definition and Examples
网页2020年4月14日 · Learn what phosphorescence is, how it works, and how it differs from fluorescence. Get examples of phosphorescent objects and materials.
Phosphorescence | Chemiluminescence, Bioluminescence ...
网页Phosphorescence, emission of light from a substance exposed to radiation and persisting as an afterglow after the exciting radiation has been removed. Unlike fluorescence, in which the absorbed light is spontaneously emitted about 10-8 second after excitation, phosphorescence requires additional.
What are Fluorescence and Phosphorescence? - ChemistryViews
网页2017年4月4日 · Both fluorescence and phosphorescence are spontaneous emissions of electromagnetic radiation. The difference is that the glow of fluorescence stops right after the source of excitatory radiation is switched off, whereas for phosphorescence, an afterglow with durations of fractions of a second up to hours can occur [6,7].
Phosphorescence: Definition, principle, and applications
网页2022年5月10日 · Phosphorescence is a radiative transition process in which light is emitted from T 1 (excited triplet state) to S o (ground singlet state) with a change in spin multiplicity. When certain substances are exposed to light, they stop emitting light instantly after the light source is cut off.
Phosphorescence Definition and Examples - ThoughtCo
网页2020年1月11日 · Phosphorescence is luminescence that occurs when energy is supplied by electromagnetic radiation, usually ultraviolet light. The energy source kicks an electron of an atom from a lower energy state into an "excited" higher energy state; then the electron releases the energy in the form of visible light (luminescence) when it falls back to a ...
Phosphorescence Definition & Meaning - Merriam-Webster
网页1. : luminescence that is caused by the absorption of radiations (such as light or electrons) and continues for a noticeable time after these radiations have stopped compare fluorescence. 2. : an enduring luminescence without sensible heat. Examples of phosphorescence in a Sentence.