Photon momentum is proportional to angular wavenumber
=====================================================

The momentum of a photon is proportional to its wavenumber.

**Notation:**

#. :math:`\hbar` (:code:`hbar`) is :attr:`~symplyphysics.quantities.hbar`.

**Links:**

#. `Wikipedia <https://en.wikipedia.org/wiki/Photon#Relativistic_energy_and_momentum>`__.

.. py:currentmodule:: symplyphysics.laws.waves.photon_momentum_is_proportional_to_angular_wavenumber

.. py:data:: momentum

    :attr:`~symplyphysics.symbols.classical_mechanics.momentum` of a photon.

Symbol:
    :code:`p`

Latex:
    :math:`p`

Dimension:
    :code:`momentum`


.. py:data:: angular_wavenumber

    :attr:`~symplyphysics.symbols.classical_mechanics.angular_wavenumber` of a photon.

Symbol:
    :code:`k`

Latex:
    :math:`k`

Dimension:
    :code:`angle/length`


.. py:data:: law

    :code:`p = hbar * k`


    Latex:
        .. math::
            p = \hbar k