Tossup

Shot noise in the detector of this technique induces a standard deviation in its main output T proportional to the square root of T times T plus one. In this technique, using the octant rule to predict the Cotton effect can (10[1])distinguish enantiomers through circular dichroism. Potassium dichromate is a calibration standard for this technique. Using this technique, the purity of a DNA or RNA mixture is characterized by the 260 (10[1])to 280 ratio. This technique’s input value for a highly conjugated compound can be estimated by applying the Woodward–Fieser rules. This technique’s primary (10[1])measurement equals the product of concentration, (10[1])the path length of a cuvette, and the molar extinction coefficient, (10[1])by the Beer–Lambert law. For 10 points, name this technique that tracks the absorbance of a sample with respect to low wavelengths. ■END■

ANSWER: ultraviolet spectroscopy [or ultraviolet–visible spectroscopy or UV spectroscopy or UV/Vis spectroscopy; accept spectrophotometry; prompt on spectroscopy]
<MY, Chemistry>
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