Interference minimum
====================

If the travel difference is equal to an odd number of half-wavelengths, then at this point of the screen
there will be a minimum of intensity during interference.

**Conditions:**

#. The waves must be coherent.

**Links:**

#. `Physics LibreTexts <https://phys.libretexts.org/Bookshelves/University_Physics/University_Physics_(OpenStax)/University_Physics_III_-_Optics_and_Modern_Physics_(OpenStax)/03%3A_Interference/3.02%3A_Young%27s_Double-Slit_Interference>`__.

.. py:currentmodule:: symplyphysics.laws.optics.interference_minimum

.. py:data:: travel_difference

    Optical travel difference between two coherent waves. See :attr:`~symplyphysics.symbols.optics.optical_distance`.

Symbol:
    :code:`Lambda`

Latex:
    :math:`\Lambda`

Dimension:
    :code:`length`


.. py:data:: number_minimum

    A :attr:`~symplyphysics.symbols.basic.whole_number` of interference minima.

Symbol:
    :code:`N`

Latex:
    :math:`N`

Dimension:
    :code:`dimensionless`


.. py:data:: wavelength

    :attr:`~symplyphysics.symbols.classical_mechanics.wavelength` of each of the both waves.

Symbol:
    :code:`lambda`

Latex:
    :math:`\lambda`

Dimension:
    :code:`length`


.. py:data:: law

    :code:`Lambda = (2 * N + 1) * lambda / 2`


    Latex:
        .. math::
            \Lambda = \frac{\left(2 N + 1\right) \lambda}{2}