Quick Answer:The Light Guide Demonstrator is an 'S' shaped acrylic bar, 220 x 20 x 20mm, used with a raybox to demonstrate total internal reflection and the principles of optical communications.
Last updated: 18 October 2026
Key Features
'S' shaped acrylic bar, 220 x 20 x 20mm.
Bottom of the bar painted white to aid visibility.
Used with a raybox to show total internal reflection.
Helps students understand the principles of optical communications.
Technical Specifications
Specification
Value
Material
Acrylic
Shape
'S' shaped bar
Size
220 x 20 x 20mm
Finish
Bottom painted white
Used with
Raybox
How It Is Used
A ray from a raybox is shone into one end of the bar. The light is trapped by repeated total internal reflection and follows the curves to emerge at the far end, the same principle by which optical fibres carry signals in communications.
Frequently Asked Questions
What does the Light Guide Demonstrator show?
Used with a raybox, the 'S' shaped acrylic bar demonstrates total internal reflection and helps students understand the principles of optical communications. Its white-painted bottom makes the light path easier to see.
