Material Phosphorescent materials
Phosphorescent or afterglow materials produce visible or invisible light as a result of incident light of a shorter wavelength (i.e. X-rays, UV-rays, etc.), detectable only after the source of the excitement has been removed.

Afterglow effect pigments are polycrystalline inorganic zinc sulphide (green afterglow) or alkaline earth sulphides (red or blue afterglow), and can be used in paints, inks or mixed to moulding or casting materials for different applications.
Category Responsive (smart) materials, Light emitting materials
Products Phosphorescent car toy
Phosphorescent dummy
References Chr. Gerner-Jensen
Photo Thomas Nissen (Computer graphics)
Copyright © 1996-2003 Torben Lenau
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