U+210E • planck
Planck Constant (h) is a symbol representing the physical constant 'h' used in quantum mechanics. It is a stylized lowercase 'h' and denotes the fundamental constant relating the energy of a photon to its frequency.
The Symbol For Planck Constant (ℎ) 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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