Optical power of spherical lens from refractive indices and distances
=====================================================================

The formula of the spherical refractive surface allows you to uniquely determine
the position of the image if the position of the object is known and vice versa.

**Links:**

#. `Studme <https://studme.org/341451/matematika_himiya_fizik/prelomlenie_otrazhenie_sveta_sfericheskoy_poverhnosti>`__.

..
    TODO find English link

.. py:currentmodule:: symplyphysics.laws.optics.optical_power_of_spherical_lens_from_refractive_indices_and_distances

.. py:data:: distance_to_object

    :attr:`~symplyphysics.symbols.classical_mechanics.euclidean_distance` from lens to object.

Symbol:
    :code:`d_o`

Latex:
    :math:`d_\text{o}`

Dimension:
    :code:`length`


.. py:data:: distance_to_image

    :attr:`~symplyphysics.symbols.classical_mechanics.euclidean_distance` from lens to image.

Symbol:
    :code:`d_i`

Latex:
    :math:`d_\text{i}`

Dimension:
    :code:`length`


.. py:data:: curvature_radius_lens

    :attr:`~symplyphysics.symbols.basic.radius_of_curvature` of the lens surface.

Symbol:
    :code:`r`

Latex:
    :math:`r`

Dimension:
    :code:`length`


.. py:data:: medium_refraction_index

    :attr:`~symplyphysics.symbols.optics.relative_refractive_index` of the surrounding medium.

Symbol:
    :code:`n_0`

Latex:
    :math:`n_{0}`

Dimension:
    :code:`dimensionless`


.. py:data:: lens_refraction_index

    :attr:`~symplyphysics.symbols.optics.relative_refractive_index` of the lens material.

Symbol:
    :code:`n`

Latex:
    :math:`n`

Dimension:
    :code:`dimensionless`


.. py:data:: law

    :code:`-n_0 / d_o + n / d_i = (n - n_0) / r`


    Latex:
        .. math::
            - \frac{n_{0}}{d_\text{o}} + \frac{n}{d_\text{i}} = \frac{n - n_{0}}{r}