Spin (physics) Spin (physics) In quantum mechanics and particle physics, spin is an intrinsic form of angular momentum carried by elementary particles, composite particles (hadrons), and atomic nuclei. Spin is one of two types of angular momentum in quantum mechanics, the other being "orbital angular momentum". The orbital angular momentum operator is the quantum-mechanical counterpart to the classical angular momentum of orbital revolution and appears when there is periodic structure to its wavefunction as the angle varies. The existence of spin angular momentum is inferred from experiments, such as the Stern–Gerlach experiment, in which silver atoms were observed to possess two possible
Fantastic Four: Unstable Molecules Fantastic Four: Unstable Molecules Fantastic Four: Unstable Molecules is a four-issue comic book limited series published by Marvel Comics. The series imagines that the creators of the Fantastic Four were inspired by people encountered in their own lives during the late 1950s and provides a backstory for those analogues. Dr. Reed Richards lives in the small town of Glen Cove and works at Columbia University, attempting to discover a practical use for the sub-atomic particles that he has discovered. He is so absorbed in his work that he forgets that he is due to host a cocktail party for his