situations where electrons and anti-electrons form "closed loops" in time. A Quantum Loooooop! https://www.youtube.com/watch?v=2rjbtsX7twc&t=1m23s https://www.

situations where electrons and anti-electrons form "closed loops" in time. A Quantum Loooooop! https://www.youtube.com/watch?v=2rjbtsX7twc&t=1m23s https://www.youtube.com/watch?v=2rjbtsX7twc&t=1m23s