But now I can calculate (and plot) the total angular momentum of this ball-spring system. Actually, I can't plot the angular momentum since that's a vector. Instead I will plot the z-component of ...

The representation of quantum states as abstract vectors. Superposition of states. Quantum operators and their matrix representations. Angular momentum operator as the generator of rotations.

This course introduces the quantum mechanical concept of angular momentum operator and its relationship with rotation operator. It then presents the angular momentum operators, their eigenvalues and ...

The only way for the total momentum to remain constant is for the car to slow down just a little bit. The same thing is true with angular momentum. Here is a quick demo I made to show this ...

More information: Amit Kam et al, Near-field photon entanglement in total angular momentum, Nature (2025). DOI: 10.1038/s41586-025-08761-1 Provided by Technion - Israel Institute of Technology ...