btbdance
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In the process called fluorescence, some substances absorb photons of one kind of radiation (e.g. ultraviolet radiation), and give out photons of a different kind (e.g. visible light). When infrared radiation falls on these materials, visible light is not emitted. Why not? (no further information about fluorescence to be included)
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Please help (not too sure where to put this)
in Chemistry
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It appears as if the answer to my question has been lost from the conversation.... could you please give me pointers.