Piobert's law (source code)

= Piobert's law
{wiki=Piobert's_law}

Piobert's Law, also known as Piobert's rule, relates to the absorption of light by a medium, specifically in the context of the absorption spectra of certain materials. It states that the absorbance of light by a substance is proportional to the concentration of that substance and the path length through which the light travels.