The Study of The Experiment of The Spectrometer To Measure The Refractive Index
Abstract: According to the university physics experiment, the refractive index can be received by the method of minimum deviation Angle . Then through the spectrometer measurement objects of the refractive index of the experimental analysis, according to the principle of brewster Angle, the experiment can be improved , that is a polaroid is placed in the front of the spectrometer telescopes, observation light reflection polarization phenomenon in the surface of the medium, record ing the readings and measuring brewster Angle, then the refractive index of the object is calculated. Comparing about the two cloth of Confucianism, the Angle measured by the experimental results and the results are consistent with other income of precision experiment, and the relative error is less than 4%. As a result , The brewster Angle method is more convenient and quick when the refractive index is not high, than the method of minimum deviation.
Key words: Brewster law; Refractive index; Spectrometer; Polarorid
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