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/publications/flux/vol2issue2/milestones.html
http://theory.uwinnipeg.ca/mod_tech/node83.html
http://www.magnet.fsu.edu/
http://www.explainthatstuff.com/magnetism.html
Forces of Nature by P.C.W. Davies
Introduction to Elementary Particles by David Griffiths
