This is documentation for Mathematica 6, which was
based on an earlier version of the Wolfram Language.
View current documentation (Version 11.1)


is a graphics directive which specifies that surfaces of 3D graphics objects which follow are to be taken to glow with color col.
specifies 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[0].
Cylinder that glows red, but has a black surface that reflects no light:
Click for copyable input
New in 6