Date: Fri, 27 May 2005 11:34:40 -0400
Author: Judith Elwell
Subject: TIR Demo
A professor wants a demonstration of total internal reflection. The
idea is to point a laser at an angle towards a notch in the top of a
plastic cylinder. The laser light then spirals down around the
cylinder. The cylinder should be big enough for a classroom to see
it-about 30 cm tall, 20 cm diam.
Are there any suggestions about how to build one, such as, type of
plastic, minimum thickness of cylinder, any other consideration.
From Winnmmw@aol.com Fri May 27 11:49:09 2005