phosphorescence
(1) a property of a certain class of films or coatings which utilizes the effect of light on chemical elements (phosphors) within the structure of the product to provide a visible color in the absence of a normal light source; ...
Phosphorescence - property held by some materials of absorbing light of one wavelength and emitting it as light of a different wavelength.
Phosphotophotography - technique of projecting an infrared image on a phosphorescent surface.
light when they are illuminated by more energetic radiation, a process known as fluorescence. This is used in fluorescent lights. Some substances emit light slowly after excitation by more energetic radiation. This is known as phosphorescence.
the other hand,what if you photographed something that glows in the dark? Yeah, the flash will pump it and your exposure will be made at the maximum glowing with no contribution from the flash. This is a cool trick for photographing phosphorescence.
 See also: Camera, Photograph, Light source, Lens, Time
  
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