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Phosphorescence

4:38

Basics and principle of Fluorescence & Phosphorescence measurement | Learn under 5 min | AI 06

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The Chemistry of Light 25 - Phosphorescence

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Zinc and Sulfur: Pyrotechnic and Phosphorescent

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Explain the theory of Fluorescence and Phosphorescence? | Analytical Chemistry

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Fluorescence and phosphorescence in Hindi

Phosphorescence is a type of photoluminescence related to fluorescence. Unlike fluorescence, a phosphorescent material does not immediately re-emit the radiation it absorbs. The slower time scales of the re-emission are associated with "forbidden" energy state transitions in quantum mechanics. As these transitions occur very slowly in certain materials, absorbed radiation is re-emitted at a lower intensity for up to several hours after the original excitation.