Quantum mechanics has a reputation that precedes it. Virtually everyone who has bumped up against the quantum realm, whether in a physics class, in the lab, or in popular science writing, is left ...

Paul Dirac's famous equation, which he first wrote down in January of 1928, predicted the existence of a spin-1/2 particle and a corresponding antiparticle. The ensuing experimental discovery of the ...

Quantum field theory marries the ideas of other quantum theories to depict all particles as “excitations” that arise in underlying fields. The British physicist Paul Dirac started the ball rolling in ...