Reduced Planck constant
Try it yourself:
| @1 |
reducedPlanckConstant
|
reducedPlanckConstant, ℏ, equals Planck constant divided by 2π. It is the standard quantum constant for angular momentum and angular frequency.
Use ℏ in E = ℏω and quantum commutation relations. Compare planckConstant for ordinary frequency and tau for the full-turn factor 2π.
Do not mix ω with frequency ν: they differ by 2π. Use multiply with units of radians per second, and retain the distinction in symbolic work with simplify.
Enter reducedPlanckConstant on a calculator line to see its built-in value, or place the name inside a longer expression. Keep any displayed unit attached when converting or combining physical quantities, and check that every other value uses a compatible dimension.
The example above is editable, so you can replace surrounding values and test the constant in your own formula. Browse all constants to compare related values and notation.