Video 79. ""Quantum Mechanics 9a - Photon Spin and Schrodinger's Cat I" by ViaScience (2013)" explains nicely how:
- incorporated into the Dirac equation as a natural consequence of special relativity corrections, but not naturally present in the Schrödinger equation, see also: the Dirac equation predicts spin
- photon spin can be either linear or circular
- the linear one can be made from a superposition of circular ones
- straight antennas produce linearly polarized photos, and Helical antennas circularly polarized ones
- a jump between 2s and 2p in an atom changes angular momentum. Therefore, the photon must carry angular momentum as well as energy.
- cannot be classically explained, because even for a very large estimate of the electron size, its surface would have to spin faster than light to achieve that magnetic momentum with the known electron charge
- as shown at Video 76. ""Quantum Mechanics 12b - Dirac Equation II" by ViaScience (2015)", observers in different frames of reference see different spin states
- Dirac equation | 329, 2k, 38
- Relativistic quantum mechanics | 99, 10k, 149
- Quantum mechanics | 169, 20k, 270
- Particle physics | 137, 32k, 512
- Physics | 276, 46k, 825
- Natural science | 0, 61k, 2k
- Science | 0, 66k, 2k
- Ciro Santilli's Homepage | 262, 218k, 4k
- Defining properties of elementary particles | 195
- Fine structure | 60, 208, 2
- Internal and spacetime symmetries | 287, 287, 2
- Klein-Gordon equation | 243, 496, 1
- Mathematical formulation of quantum mechanics | 490, 1k, 6
- Particle physics | 137, 32k, 512
- Quantum entanglement | 569, 618, 5
- Quantum Mechanical View of Reality by Richard Feynman (1983) | 238
- Quantum superposition | 197
- Solutions of the Dirac equation | 120, 236, 1
- Spin comes naturally when adding relativity to quantum mechanics | 140, 188, 5
- Two-state quantum system | 60, 108, 2
- Why do multiple electrons occupy the same orbital if electrons repel each other? | 87
- Zeeman effect | 314