In a 1998 episode called "The Wizard of Evergreen Terrace," Homer Simpson becomes an inventor and is shown in front of a complicated equation on a blackboard. According to Simon Singh, the author of "The Simpsons and their Mathematical Secrets," the equation predicts the mass of the Higgs boson particle. It was first predicted in 1964 by Professor Peter Higgs and five other physicists, but it wasn't until 2013 that scientists discovered proof of the Higgs boson in a £10.4 billion ($13 billion) experiment.