Definition
Dirac refers primarily to Paul Dirac, a renowned British physicist who made significant contributions to quantum mechanics. The Dirac equation, which describes the behavior of fermions like electrons, is his most famous work. This equation elegantly combines quantum mechanics and special relativity. Essentially, Dirac's work explains how tiny particles act at incredibly high speeds. Think of it as the formula that unlocks the secrets of the very small and very fast. His theoretical predictions laid the groundwork for antimatter.