We did a lab involving wavelengths and small vials of liquid to measure the absorbance and %T (transmittance) of the said liquids. In doing so, we have discovered that A and %T have an inverse relationship in which the higher the A, the lower the %T. This corresponds with Beer's law.
Absorbance = e L c in which e is the molar extinction coefficient, L is the path length of the cell holder, and c is the concentration of the solution.
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