Fully constructive interference condition
=========================================

The interference of two waves is said to be *fully constructive* when the amplitude of the
resulting wave is precisely the sum of the amplitudes of the comprising waves. In that case,
there must be an even number of half-cycles out of phase between each other.

**Links:**

#. `Wikipedia <https://en.wikipedia.org/wiki/Wave_interference#Real-valued_wave_functions>`__.

.. py:currentmodule:: symplyphysics.laws.waves.fully_constructive_interference_condition

.. py:data:: phase_shift

    :attr:`~symplyphysics.symbols.classical_mechanics.phase_shift` between interfering waves.

Symbol:
    :code:`phi`

Latex:
    :math:`\varphi`

Dimension:
    :code:`angle`


.. py:data:: integer_factor

    Integer factor. See :attr:`~symplyphysics.symbols.basic.whole_number`

Symbol:
    :code:`N`

Latex:
    :math:`N`

Dimension:
    :code:`dimensionless`


.. py:data:: law

    :code:`phi = 2 * pi * N`


    Latex:
        .. math::
            \varphi = 2 \pi N