To re-watch or if your class did not see the video.
video that attempts to illustrate the 11 dimensions of string theory; I connected the video to multiple universe theory: http://www.tenthdimensioncom/flash2.php
A short video on gravity
http://www.pbs.org/wgbh/nova/einstein/rela-space-w-220.html
a short video on string theory to unify electromagnetic and gravitational forces
http://www.pbs.org/wgbh/nova/elegant/media2/3012_q_04.html
