Source: /cirosantilli/planck-einstein-relation

= Planck-Einstein relation

= Planck relation

Photon energy is proportional to its frequency:
energy = (plancks \space constant) * (frequency)
or with common weird variables:
E = h * \nu

This only makes sense if the <photon> exists, there is no classical analogue, because the energy of classical waves depends only on their amplitude, not frequency.

Experiments that suggest this:
* <photoelectric effect>
* <Compton scattering>