begin mathsize 48px style log open parentheses T close parentheses space equals space epsilon c l end style

T= Transmittance ; ε = Molar Absorption Coefficient ; c = Concentration ; l = Path Length





Beer Lambert Law states that the transmission of a monochromatic light through a substance is logarithmetically related to  the product of the concentration , path length (distance that light travels through the material) and the molar extinction coefficient of the substance. Using this law any of the four properties can be calculated by knowing the values of the other three.  

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