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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...
In practice, spin is usually given as a dimensionless spin quantum number by dividing the spin angular momentum by the reduced Planck constant ħ. Often, the "spin quantum number" is simply called "spin".
Feb 22, 2022 · Objects that are spinning, rotating. or orbiting another body are ones with angular motion. Now with angular motion, comes angular momentum. This is slightly different from the linear momentum...
Let's try to understand what spin is, where it comes from, how it's measured, and why its presence in elementary particles is so crucial for modern physics!
- 14 min
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- Terra Physica
Aug 19, 2012 · At the most basic level, spin tells you how a particle transforms under rotations. For a spin $S$ particle there are $2S+1$ states, which transform into one another when it's rotated (or when the system is rotated around it).
- Spin is a technical term specifically referring to intrinsic angular momentum of particles. It means a very specific thing in quantum/particle phys...
- Imagine going to the rest frame of a massive particle. In this frame, there is rotational symmetry, which means that the Lie algebra of rotations a...
- I'm trying to give a less technical answer. It's not rigorous but should give you the idea how spin and the regular rotation related. Maxwell's equ...
- Spin is angular momentum of particles. The lowest possible spin is 1/2 h-bar. It's impossible for any particle with angular momentum to have a lowe...
- More than ten years later, time is ripe for a more up-to-date answer. Let's consider the case of the electron. Other particles have non-zero spin,...
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.
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Aug 6, 2019 · Spin is a physical property of the electron. But what exactly is it? And how is it useful? Russell Cowburn, a physicist from the Cavendish laboratory in Cambridge joined Izzie Clarke in the studio to chat about his work on spin...
