 This expression requires assumptions that formula_22 is sufficiently high in energy that formula_62, and that the temperature of the sample is high enough that magnetic saturation does not produce nonlinear formula_63 term behavior.Though one must pay attention to proportionality constants, there is a proportionality between formula_29 and molar extinction coefficient formula_65 and absorbance formula_66 for concentration formula_67 and path length formula_68.These Faraday terms are the usual language in which MCD spectra are discussed.