Spectrophotometer

Spec`tro*pho*tom"e*ter

(?), n. [Spectrum + photometer.] 1. (Opt.) An instrument for measuring or comparing the intensities of the colors of the spectrum.
[1913 Webster]

2. (Chem., Physics) An analytical instrument for measuring the degree of absorption of light at different wavelengths by a chemical substance. A specific pattern of absorption intensities at a series of wavelengths is a characteristic of each different chemical substance.
[PJC]

 

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Thu 13th December 2018