U+210F • planck
Planck Constant Over Two Pi (ħ) is a symbol representing the reduced Planck constant, equal to the Planck constant divided by 2π. It is used extensively in quantum mechanics to denote angular momentum quantization and related physical quantities.
The Symbol For Planck Constant Over Two Pi (ℏ) is a unicode character in the Basic Multilingual Plane Plane. It is found in the Letterlike Symbols block and was approved as part of Unicode Version 1.1 in 1993
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