ℏ

See also: ħ, ℎ, and Appendix:Variations of "h"

ℏ U+210F, ℏ PLANCK CONSTANT OVER TWO PI ← ℎ [U+210E] Letterlike Symbols ℐ → [U+2110]

Translingual

Symbol

ℏ

1. (physics) Reduced Planck's constant. Has the value ℎ/2π (where ℎ is Planck's constant), or approximately 1.05457182×10^-34 J⋅s.

   Synonym: Dirac constant

Usage notes

(Names for ℏ in different languages:):

• English: h bar
• German: h quer