Download yp-shadow-10.hqx (243,828 KB)
From: ch865@freenet.carleton.ca
Subject: YP Shadow 1.0 (for physics teachers)
Learn how a shadow is formed!
YP Shadow simulates a light source projecting the shadow of an opaque body
on a screen. Using the mouse, it is easy to change the position and size
of the light source, position and size of the opaque body, and position of
the screen. YP Shadow draws the rays of light used to mark the boundaries
of the umbra and the penumbra, and it displays the shadow as it appears on
the screen.
Yves Pelletier
pelletier@kagi.com
http://www.kagi.com/pelletier