You have permission to use these applets in a classroom setting or take screenshots,
for commercial or non-commercial purposes, as long as the applets are unmodified.
You have permission to modify the applets and/or copy the applets onto your own web site
as long as you credit me (Paul Falstad) and provide a link to my page
(the page you found the applet(s) on, or http://www.falstad.com/mathphysics.html). Contact
me for any other uses. The source code for each applet is generally available on that
applet's web page, but some of the applets use third-party source code that has restrictions.
java@falstad.com