ACRYLIC LIGHT GUIDE DEMONSTRATOR FOR USE WITH RAY BOX
The acrylic light guide demonstrator is used to demonstrate total internal reflection.
Students can apprehend how this phenomenon may be used to confine light within a guide or fibre, thus leading to an appreciation of the principles of optical communications and an understanding of its vast applications.
The light guide demonstrator comprises of a shallow S-shaped acrylic bar, whose dimensions are 220 x 20 x 20mm.
The lower surface of the bar is painted white to aid in the visibility of the path of the light rays.
If a light ray (from a light box or laser) is introduced into one end of this S-shaped acrylic bar, it can be seen to be reflected several times, from the internal surfaces of the bar, to emerge from the other end.