electricity and magnetism are the same thing: in 20 minutes-ish! James Clerk Maxwell: A Dynamical Theory of the Electromagnetic Field — https://royalsocietypublishing.org/doi/epdf/10.1098/rstl.1865.0008 Kahn Academy: Deriving Speed of Light from Maxwell's Eqns — https://www.khanacademy.org/science/electromagnetism/x4352f0cb3cc997f5:the-remaining-maxwell-s-equation-and-understanding-light/x4352f0cb3cc997f5:compiling-maxwell-s-equations-how-light-works/v/deriving-speed-of-light-using-maxwell-s-equations Many thanks to my patrons! Join my patreon for an extra video per month: https://www.patreon.com/acollierastro