Thanks to Ludwik Kowalski for sharing the links below.
Don
Dr. Donald Polvani
Adjunct Faculty, Physics
Anne Arundel Community College
-----Original Message-----
From: phys-l-bounces@carnot.physics.buffalo.edu
[mailto:phys-l-bounces@carnot.physics.buffalo.edu] On Behalf Of ludwik
kowalski
Sent: Wednesday, August 03, 2011 1:23 PM
To: Forum for Physics Educators
Subject: [Phys-l] Sharing a link