The Dirac equation is a fundamental equation in quantum mechanics and quantum field theory, formulated by British physicist Paul Dirac in 1928. It describes the behavior of fermions, such as electrons, which are particles that follow the rules of quantum mechanics and relativity. The equation combines quantum mechanics with special relativity, making it one of the first successful theories to explain how particles move at speeds close to the speed of light.

the image would represent the subatomic particles at a quantum level.