Kids' Feynman t-shirt – Royal Institution
£15
Product description from their website:
This design is our nod to Feynman, inspired by string theory diagrams and a bit of quantum *blur* for those who notice some familiar colours. In theoretical physics, a Feynman diagram is a pictorial representation of the mathematical expressions describing the behavior and interaction of subatomic particles. Buying from us directly supports our charitable activities, such as support to engage with science for disadvantaged schools.