Page "Angular momentum" Paragraph 76

However, in quantum physics, there is another type of angular momentum, called spin angular momentum, represented by the spin operator S. Almost all elementary particles have spin.

Spin is often depicted as a particle literally spinning around an axis, but this is a misleading and inaccurate picture: Spin is an intrinsic property of a particle, fundamentally different from orbital angular momentum.

All elementary particles have a characteristic spin, for example electrons always have " spin 1 / 2 " while photons always have " spin 1 ".