基于布儒斯特定律的宝石折射率的测量  

Measuring refractive index of gemstonesbased on Brewster’s law

作　　者：董锡杰 李钰[1] 李恺 刘宇鹏 刘焱 DONG Xijie;LI Yu;LI Kai;LIU Yupeng;LIU Yan(Department of Applied Physics,Wuhan University of Science and Technology,Wuhan 430065,China;Hubei Province Key Laboratory of Systems Science in Metallurgical Process,Wuhan 430065,China)

机构地区：[1]武汉科技大学应用物理系湖北省级物理实验示范中心,湖北武汉430065 [2]湖北省冶金工业过程系统科学重点实验室(武汉科技大学),湖北武汉430065

出　　处：《物理实验》2024年第2期10-13,共4页Physics Experimentation

基　　金：教育部产学研项目(No.202101155001,No.202102227021);湖北省高等学校省级教学研究项目(No.2020345,No.2018246);湖北省高等学校实验室研究项目(No.HBSY2019-05);武汉科技大学校级重点教学研究项目(No.2019Z013)。

摘　　要：折射率是天然或人造宝石均具备的特征参量,对于宝石种类和纯度的鉴定具有重要意义.本文基于大学物理实验教学中的布儒斯特定律,设计了无损测量宝石折射率的方案,并搭建了完整的测量和导向装置,实现了对待测样品折射率参量的高精度自动采集.测量结果表明:利用该装置测定和田玉、钻石样品的折射率值与理论值吻合较好.The refractive index is a characteristic parameter for both natural and artificial gemstones,which is of great significance for the identification of gemstones with different types and purity.In this paper,a non-destructive strategy was developed for investigating the refractive index of different kinds of gemstones based on Brewster’s law introduced in college physics experiments.On this basis,a complete set of measurements and guidance devices were designed and constructed,and high-precision automatic collection of refractive index parameters of samples could be realized.Results showed that the refractive indexes of Hotan jade and diamond measured by the as-constructed devices were very close to their theoretical values,indicating high measurement accuracy.

关 键 词：折射率 布儒斯特定律 无损测量 

分 类 号：O439[机械工程—光学工程]