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Spin is an intrinsic form of angular momentum carried by elementary particles, and thus by composite particles such as hadrons, atomic nuclei, and atoms. [1] [2] : 183 –184 Spin is quantized, and accurate models for the interaction with spin require relativistic quantum mechanics or quantum field theory .
spin, in physics, the amount of angular momentum associated with a subatomic particle or nucleus and measured in multiples of a unit called the Dirac h, or h -bar (ℏ), equal to the Planck constant divided by 2π. For electrons, neutrons, and protons, the multiple is 0.5; pions have zero spin.
- The Editors of Encyclopaedia Britannica
Spin is quantized in the same manner as orbital angular momentum. It has been found that the magnitude of the intrinsic spin angular momentum \(S\) of an electron is given by \[S = \sqrt{s(s + 1)}\hbar, \nonumber \] where \(s\) is defined to be the spin quantum number.
Oct 21, 1999 · "Spin is the total angular momentum, or intrinsic angular momentum, of a body. The spins of elementary particles are analogous to the spins of macroscopic bodies. In fact, the spin of a...
Nov 22, 2022 · Naturally, physicists call this behavior “spin.” But despite appearances, electrons don't spin. They can't spin; proving that it's impossible for electrons to be spinning is a standard homework...
Spin is an intrinsic property of all quantum particles that determines their behavior in magnetic fields and their categorization as bosons or fermions. Learn how spin was discovered, how it affects matter and forces, and how it works in MRI machines.
Apr 19, 2020 · Spin is an intrinsic property that is carried by all elementary particles, composite particles, and atomic nuclei. It is a form of angular momentum, the other form being orbital angular momentum. It has never been observed directly, but is has been inferred from experimental data, namely the Stern-Gerlach Experiment.
