Physics:Quantum atoms/spin

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spin is a Book II topic in the Quantum Collection. Spin is an intrinsic form of angular momentum carried by an electron and other quantum particles. It is a fundamental property that does not correspond to classical rotation. Spin is represented by quantum operators and has discrete measurement outcomes along any chosen axis. For electrons and many other particles it also determines magnetic moments and exchange behavior. Spin is central to atomic structure, the Stern-Gerlach experiment, magnetic resonance, spin-orbit coupling, quantum information, and the distinction between bosons and fermions.

File:Electron spin.png
Spin states of an electron, often described as "up" or "down".

Description

Spin is quantized and can take discrete values. For electrons, spin has two possible states, commonly referred to as "spin-up" and "spin-down". These states play a central role in determining how electrons occupy orbitals.

Spin is essential for understanding atomic structure, magnetic properties, and the Pauli exclusion principle.

Properties

  • intrinsic quantum property
  • related to angular momentum
  • determines electron pairing in atoms

See also

Table of contents (217 articles)

Index

Full contents

References


Author: Harold Foppele


Source attribution: Physics:Quantum atoms/spin