Malus's Law (Polarisers)
Calculate the light intensity transmitted through one or two polarising filters at a given angle, free online.
À propos de cette calculatrice
Malus's law: I = I₀ cos²θ for polarised light hitting an analyser at angle θ. Unpolarised light loses half its intensity passing through the first polariser (I = I₀/2) before Malus's law applies to the next one.