**The Electron**, hosted by Melvyn Bagg on

**In Our Time**.

https://www.bbc.co.uk/sounds/play/m001cf1n

This led me to the

**Dirac wave equation**article on Wikipedia.

https://en.wikipedia.org/wiki/Dirac_equation

To any seasoned mathematician, physicist or scientist there is certainly enough there to make your head spin (pun intended).