Planck Constant
Part of Math Symbols
Planck Constant has no standard Windows Alt code. Copy the character directly, or use its HTML entity or Unicode value instead.
- Alt code
- None
- HTML entity
- ℎ
- Unicode
- U+210E
About this symbol
Unicode’s own notes admit that ℎ is simply a mathematical italic h, and that its name, Planck constant, comes from older character sets. Physicists write Planck’s constant, the basic step size of quantum physics, as an italic h, and its partner ℏ, h-bar, as h divided by 2π.
Unicode facts
- Official name
- PLANCK CONSTANT
- Also called
- Height, specific enthalpy, ...
- Type
- Lowercase letter
- Unicode block
- Letterlike Symbols
- Added in
- Unicode 1.1 (1993)
- Unicode notes
- Simply a mathematical italic h; this character’s name results from legacy usage
Click the symbol or any value at the top of the page to copy it. See the full Math Symbols chart for related characters.