A new method for measuring liquid refractive index by  analyzing a defocused image of liquid-core cylindrical lens 
WANG Yan, WANG Rui-xian, ZHAO Qing-hao, MENG Wei-dong, PU Xiao-yun
College Physics . 2022, (4): 21 .  DOI: 10.16854/j.cnki.1000-0712.210313

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