Click with the mouse to send in a horizontal beam of light to
reflect off the boundary of the circle.
After you try a few beams
at different heights, can you see the nephroid curve showing up as
tangent to all the reflected lines?
Return to: The Geometry of Reflecting Light Rays
Vic Reiner <firstname.lastname@example.org>
Frederick J. Wicklin <email@example.com>
Last modified: Thu Apr 11 07:55:38 1996