Attenuation coefficient in dielectric in rectangular waveguide
==============================================================

A rectangular waveguide is a rectangular metal waveguide capable of supporting waves
propagating along it. 

..
    TODO: find link

.. py:currentmodule:: symplyphysics.laws.electricity.circuits.waveguides.attenuation_coefficient_in_dielectric_in_rectangular_waveguide

.. py:data:: attenuation_coefficient

    :attr:`~symplyphysics.symbols.electrodynamics.attenuation_coefficient` of the waveguide.

Symbol:
    :code:`alpha`

Latex:
    :math:`\alpha`

Dimension:
    :code:`1/length`


.. py:data:: waveguide_impedance

    :attr:`~symplyphysics.symbols.electrodynamics.wave_impedance` in the waveguide.

Symbol:
    :code:`eta`

Latex:
    :math:`\eta`

Dimension:
    :code:`impedance`


.. py:data:: medium_impedance

    :attr:`~symplyphysics.symbols.electrodynamics.wave_impedance` in the dielectric medium.

Symbol:
    :code:`eta_0`

Latex:
    :math:`\eta_{0}`

Dimension:
    :code:`impedance`


.. py:data:: wavelength

    :attr:`~symplyphysics.symbols.classical_mechanics.wavelength`.

Symbol:
    :code:`lambda`

Latex:
    :math:`\lambda`

Dimension:
    :code:`length`


.. py:data:: loss_tangent

    :attr:`~symplyphysics.symbols.electrodynamics.dielectric_loss_tangent`.

Symbol:
    :code:`tan(delta)`

Latex:
    :math:`\tan \delta`

Dimension:
    :code:`dimensionless`


.. py:data:: law

    :code:`alpha = pi / lambda * eta / eta_0 * tan(delta)`


    Latex:
        .. math::
            \alpha = \frac{\pi}{\lambda} \frac{\eta}{\eta_{0}} \tan \delta