Hank reaches the fourth and final of the four fundamental interactions in physics: electromagnetism. In this part, he teaches us about the electrostatic force, which builds up a charge in an object and can travel in the form of an electron stream. Stay tuned for Part II, where we will finish up the series with the magnetic force. Like SciShow on Facebook: www.facebook.com/scishow Follow SciShow on Twitter: www.twitter.com/scishow References: abyss.uoregon.edu/~js/21st_century_science/lectures/lec04.html www.explainthatstuff.com/electricity.html regentsprep.org/Regents/physics/phys03/acoulomb/default.htm electromagnetism, four fundamental forces, physics, electrostatic force, magnetic force, electricity, magnetism, static, lighting, shock, charge, attractive, repulsive, coulomb, coulomb's law, protons, electrons, fundamental interaction, photon, light, heat, speed of light, potential energy, atom, negative, positive, cling, electron flow, flow, magnetic field, scishow, physics, education, hank green