No need to be a lawyer, physicist, or chemist to enjoy any of these gifts featuring the Beer-Lambert Law, also known as Beer's law or the Lambert–Beer law or the Beer–Lambert–Bouguer law, which relates the absorption of light to the properties of the material through which the light is travelling. The law states the following: there is a logarithmic dependence between the transmission (or transmissivity), T, of light through a substance and the product of the absorption coefficient of the substance, α, and the distance the light travels through the material (i.e. the path length), ℓ. Make others do a double-take on what is law in both the chemistry and physics worlds with any of these molar absorptivity gifts featuring the Beer-Lambert law today!