This is documentation for Mathematica 8, which was
based on an earlier version of the Wolfram Language.

# Glow

 Glow[col]is a graphics directive which specifies that surfaces of 3D graphics objects that follow are to be taken to glow with color col. Glowspecifies that there is no glow.
• Glow is added to diffuse and specular reflection components to determine the final rendered color of a surface.
• Glow is a color component independent of simulated illumination.
• A surface can be specified as having an absolute color col by giving the combination of directives Glow[col], Black, and Specularity.
Cylinder that glows red but has a black surface that reflects no light:
Cylinder that glows red but has a black surface that reflects no light:
 Out[1]=
 Scope   (2)
Glow gives an overall surface color that is independent of any Lighting:
Other surface colors still interact with lighting even if Glow is given:
 Applications   (2)
Use a pure color function with no lighting interaction:
Use a color function based on the phase of a complex function:
With Glow, objects can look flat if edges are not drawn:
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