Electromagnetism - Magnetic Force: The Four Fundamental Forces of Physics

In this final segment on the four fundamental forces of physics, Hank tackles the magnetic force, the second of the two ways in which electromagnetism is apparent in the universe.
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References:
http://www.magnet.fsu.edu/mediacenter...
http://theory.uwinnipeg.ca/mod_tech/n...
http://www.magnet.fsu.edu/
http://www.explainthatstuff.com/magne...
Forces of Nature by P.C.W. Davies
Introduction to Elementary Particles by David Griffiths