Measuring the refractive index of solution has important theoretical and practical implications. It studies the refractive index measurement device and method of transparent solution based on Michelson interferometer and smart phone,and applies it to quantitative measurement of the refractive index of salt and sucrose solution.The experimental results show that at the optimum working angle,the measuring device and method can quantitatively measure the refractive index of transparent liquid,the performance of the measuring device is stable,and the measuring method has high precision,about 3% and 2% respectively. Using smartphone optical sensor and free application-Phyphox to read the changes of laser interference fringes instead of human eyes,not only solves the pain point of human eye reading in traditional Michelson interference experiments,but also improves the objectivity and accuracy of the experiment.Experimental research will help to expand the application field of Michelson interferometer and smartphone in physics teaching and research, and deepen students’understanding and knowledge of wave optics and two-beam interference.
袁浩洋, 谈 浩 , 李英豪, 谌 利 , 朱丽颖, 刘 泉, 邓海游 , 刘宁亮, 易伟松 .
基于迈克尔逊干涉仪和智能手机定量测量溶液折射率
[J]. 大学物理实验, 2022, 35(3): 94-98.
YUAN Haoyang, TAN Hao , LI Yinghao, SHEN Li , ZHU Liying, LIU Quan , DENG Haiyou, LIU Ningliang , YI Weisong .
Quantitative Measuring Refractive Index of Solution Based on Michelson Interferometer and Smart Phone
. Physical Experiment of College, 2022, 35(3): 94-98.