These Lucite plates are doped with florescent dyes. What strikes the casual observer as odd is the unusual brightness of the edges compared to the faces. My hypothesis is that light comes in primarily through the faces. The light is absorbed by the florescent dye molecules and is re-emitted in random directions. Light, which is emitted at an angle greater than the critical angle of a face, will be totally reflected and be shuttled to the edge where it escapes. Calculations of the magnitude of this effect should be possible and will be given to my second semester E&M class.

Edge Light