HBar
\[HBar]
Alias: hb. Letter-like form. Used in physics to denote Planck's constant divided by ; sometimes called Dirac's constant. See The Mathematica Book: Section 1.10.8 and Section 3.10.3. See also: \[Angstrom] .
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\[HBar]
Alias: 
hb
; sometimes called Dirac's constant. 
