Fields and Symmetry

The Four Fundamental Forces, Part 2: Strong, Weak, Electromagnetic Interactions, Quantum Field Theory and Yang Mills Theory

Image put together from Wikipedia, https://www.geogebra.org/ and https://feynman.aivazis.com/. Many more physicists deserve their picture here, but there was not enough space.

In 1831, Michael Faraday wrapped two wires around an iron ring. When he sent a current through one of the wires, he could measure a current in the other, but only right after he closed the circuit, or when he broke it.