Let there be electromagnetism

In the beginning, God said, "Let there be light." Or, in translation: https://www.youtube.com/watch?v=roqGqhX6_-U "The four-dimensional divergence of an antisymmetric second rank tensor equals zero". That is the formula for light. In physics, light is defined as a form of electromagnetic radiation. If I understand correctly, what we have in the video above is James Clerk … Continue reading Let there be electromagnetism