colour.phenomena.light_water_molar_refraction_Schiebener1990#

colour.phenomena.light_water_molar_refraction_Schiebener1990(wavelength: ArrayLike, temperature: ArrayLike = 294, density: ArrayLike = 1000) → NDArrayFloat[source]#

Calculate water molar refraction using Schiebener et al. (1990) model.

Parameters:

  • wavelength (array_like) – Wavelength values \(\lambda\) in nanometers.

  • temperature (float, optional) – Water temperature \(T\) in Kelvin. Default is 294 K (21°C).

  • density (float, optional) – Water density \(\rho\) in kg/m³. Default is 1000 kg/m³.

Returns:

Molar refraction values.

Return type:

numpy.ndarray

Examples

>>> light_water_molar_refraction_Schiebener1990(589)
np.float64(0.2062114...)
>>> light_water_molar_refraction_Schiebener1990([400, 500, 600])
...
array([0.2119202..., 0.2081386..., 0.2060235...])

References

[SSLSG90]