Conclusion
Additional information can be found at:
http://webphysics.davidson.edu/applets/applets.html
http://webphysics.iupui.edu/jitt/jitt.html
http://ed.phys.ncat.edu/ccliepl/physletlib/index.html
http://www.merlot.org/
http://webphysics.davidson.edu/mjb/