College Physics ›› 2020, Vol. 39 ›› Issue (10): 42-47.doi: 10.16854 / j.cnki.1000 0712.190552

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Discussion and improvement of the experiment for measuring the optical rotation of solution based on light intensity

ZHANG Yanan,Ge Jian,LIU Guodong,DUAN Yiqun   

  1. 1. School of Physics and Optoelectronic Engineering,Nanjing University of Information Science and Technology,Nanjing,Jiangsu 210044,China; 2. Engineering Training Center,Nanjing University of Information Science and Technology,Nanjing,Jiangu 210044,China
  • Received:2019-12-02 Revised:2020-05-12 Online:2020-10-20 Published:2020-10-21

Abstract: The rotation angle of light polarization direction is calculated by using the change in light intensity

after the light passes through the optically active solution,thereby calculating the optical rotation rate of the solution. We analyze the influence of various factors on the results in the experiment,and give the improved method and correct the final calculation formula. The data is measured by experiments to verify the correctness of the theory.

Key words: Lambert-Beer law, Malus law, optical rotation, parallel transmission