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Physics 10 Online
OpenStudy (anonymous):

Some materials when excited do not immediately de-excite, rather they de-excite over an extended period of time. This is called a:Iridescence b:Phosphorescence c:Fluorescence

OpenStudy (anonymous):

well, unlike fluorescence,in phosphorescence, the atoms do not radiate energy immediately....it is phosphorescence...

OpenStudy (anonymous):

B.:Phosphorescence

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