Constants#

Constants (like hbar) related to quantum mechanics.

class sympy.physics.quantum.constants.HBar[source]#

Reduced Plank’s constant in numerical and symbolic form [R675].

Examples

>>> from sympy.physics.quantum.constants import hbar
>>> hbar.evalf()
1.05457162000000e-34

References

R675(1,2)

https://en.wikipedia.org/wiki/Planck_constant