# PlanckConstant

double PlanckConstant ();

## Purpose

This function returns the value of Planck's Constant. The units are J/Hz and the uncertainty of the value is 5.4 ppm. Planck's constant is a universal constant of nature which relates the energy of a quantum of radiation to the frequency of the oscillator which emitted it.

## Parameters

None.

## Return Value

Name | Type | Description
plancksConstant | double | Returns the value of Planck's Constant.