## Background

The Planck constant (h) appears in many physics equations, most notably E=hf (otherwise known as the Planck relation or Planck-Einstein relation). Named after Max Planck, it is used to calculate the energy of the electromagnetic wave such as radio, light, microwaves, X-rays, etc. Each of these are different frequencies (f) of the electromagnetic wave. Since Planck’s constant does not change, the energy of an electromagnetic wave (photon) is based only on wave frequency, which is variable.

See also: E=hf

## Energy Wave Constants – Equivalent

The following is the representation of this fundamental physical constant expressed in energy wave theory. Using energy wave constants, its value was calculated and shown to match the known value in the Summary of Calculations table.

### Planck Constant

Planck constant was derived from the Transverse Energy Equation. The Planck constant appears as a combination of wave constant values when solving for energy when transverse wavelength (or frequency) is variable. When transverse frequency is used in the equation below, it represents transverse energy, or E=hf.

**Calculated Value: **6.6261E-34

**Difference from CODATA:** 0.000%

**Calculated Units**: kg m^{2} / s

The complete derivation of this constant is available in the Fundamental Physical Constants paper.