Quantum Theory

Quantum Theory

It begins with Max Planck, at the edge of the 20th century, staring at the problem of blackbody radiation — why hot objects emit light in specific patterns. He discovered that energy comes in packets, or quanta, like coins being dropped one by one into a jar rather than a continuous flow.
Half-Integer Spin – 1/2

Half-Integer Spin – 1/2

Half-integer spin is a quantum property of particles that makes them behave uniquely — they must spin twice to return to their original state, and they cannot share the same space or state with identical particles.