## https://en.wikipedia.org/wiki/Spin%E2%80%93statistics_theorem
spin is the property of angular momentum rotations symmetry 

## https://en.wikipedia.org/wiki/Spin_(physics)#Rotations

## PBS videos

july 2021 [Electrons DO NOT Spin](https://www.youtube.com/watch?v=pWlk1gLkF2Y)
sept 2021 [How Electron Spin Makes Matter Possible](https://www.youtube.com/watch?v=EK_6OzZAh5k)
june 2021 [How Quantum Entanglement Creates Entropy](https://www.youtube.com/watch?v=vgYQglmYU-8)

## Spin of photons and phonons


https://www.reddit.com/r/askscience/comments/3cgtqs/do_phonons_have_spin/
https://physics.stackexchange.com/questions/78003/phonon-carries-zero-spin-why

- https://en.wikipedia.org/wiki/Spin_angular_momentum_of_light

- 2017 [Do phonons carry spin?](https://arxiv.org/pdf/1708.07407.pdf)

http://pure.tudelft.nl/ws/portalfiles/portal/72393576/PhysRevB.101.104402.pdf

## speculative???

[Bosons, Fermions, Spin, Gravity, and the Spin-Statistics Connection](https://arxiv.org/pdf/1906.07656.pdf)