ELI5: Explain Like I'm 5

Pair production

Pair production is when two particles are made at the same time when energy is released. Imagine two friends, let's call them Jack and Jill. To make Jack and Jill, you need energy, like a spark of energy or a burst of energy. Now with this spark of energy, Jack and Jill can appear at the same time. This is like pair production - two particles made at the same time when energy is released.