Having recently posted a general piece about spin in general (https://physbang.com/2024/11/24/what-is-spin/) I thought it would be useful to discuss one particular use of spin in a practical context; cooling. Suppose we have a material with a single unpaired electron in each of its atoms. The lone electrons can either be spin-up or spin-down and on … Continue reading Spin Cooling
What is Spin?
Spin, when applied to fundamental particles, is a property rather than a description. The basic components of matter are not tiny spinning tops, like coins that are stood on edge then flicked on opposite sides to make them rotate. Instead, spin is a physical property that can be demonstrated and also a numerical value that … Continue reading What is Spin?
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