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. Like SciShow on Facebook: www.facebook.com/scishow Follow SciShow on Twitter: www.twitter.com.scishow References: www.magnet.fsu.edu/mediacenter/publications/flux/vol2issue2/milestones.html theory.uwinnipeg.ca/mod_tech/node83.html www.magnet.fsu.edu/ www.explainthatstuff.com/magnetism.html Forces of Nature by P.C.W. Davies Introduction to Elementary Particles by David Griffiths electromagnetism, four fundamental forces, physics, electrostatic, magnetic, force, interaction, fundamental, magnetic field, north pole, south pole, photon, magnetism, electricity, earth, navigation, magnetosphere, solar wind, scishow, science, power, energy, hank green