| http://www.w3.org/ns/prov#value | - Furthermore, by changing the amount of light scattering particles 232 disposed in the wall 216, the characteristics of the glow can be altered, i.e., the greater the particles the greater the light scattering. [0143] In another embodiment, the light directing element 230 is a layer, coating or texture that is applied to the inner or outer surface 220, 222 of the wall 216.
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