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Instead, a phosphorescent material absorbs some of the radiation energy and reemits it for a much longer time after the radiation source is removed. In a general sense, there is no distinct boundary between the emission times of fluorescence and phosphorescence (i.e.: if a substance glows under a black light it is generally considered ...
An electron in the phosphor absorbs a high-energy photon from the applied radiation, exciting it to a higher energy level. After losing some energy in non-radiative transitions, it eventually transitions back to its ground state energy level by fluorescence, emitting a photon of lower energy in the visible light region.
Commonly referred to as phosphorescence, persistent luminescence is the emission of light by a phosphorescent material after an excitation by ultraviolet or visible light. Mechanism [ edit ]
Pearl Scene using phosphorescent paint, Irving Berlin's 1921 Music Box Revue. Phosphorescent paint is commonly called "glow-in-the-dark" paint. It is made from phosphors such as silver-activated zinc sulfide or doped strontium aluminate, and typically glows a pale green to greenish-blue color. The mechanism for producing light is similar to ...
“Many bad odors are acidic, so a base like baking soda can absorb them in a pinch.” Baking soda can also eliminate funky smells emanating from your garbage disposal.
In fact, this process is caused by the phosphorus reacting with oxygen in the air; in a sealed container, this process will eventually stop when all the oxygen in the container is consumed. By the 18th century, it was known that in pure oxygen, phosphorus does not glow at all; [29] there is only a range of partial pressures at which it does ...
Its results suggested that certain common indoor plants, like pothos, ivy and ficus, may absorb carbon dioxide and release oxygen through photosynthesis, and provide a natural way to remove toxic ...
At the end of this process, the photosensitizer returns to its ground state, where it remains chemically intact, poised to absorb more light. [ 2 ] [ 3 ] [ 4 ] One branch of chemistry which frequently utilizes photosensitizers is polymer chemistry , using photosensitizers in reactions such as photopolymerization , photocrosslinking, and ...
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