http://en.wikipedia.org/wiki/Charles-Augustin_de_Coulomb
http://www.corrosion-doctors.org/Biographies/CoulombBio.htm
_ ley de coulomb
http://www.youtube.com/watch?v=173ycV53GgU
_ Physics 12.2.1a - Coulomb`s Law
http://www.youtube.com/watch?v=Q0Sz1B3DiSA