利用劈尖干涉测量透明液体的折射率

A Measurement of Liquid Refractive Index by Using Interfered Strip of Wedge

本文提出一种用劈尖干涉测量透明液体折射率的方法。单色光垂直入射到充满透明液体的劈尖将会产生明暗相间等间距的条纹为等厚干涉,测量相邻两明条纹或者暗条纹的距离可表征透明液体的折射率。通过实验表明,用本方法测得一种饮用矿泉水的折射率和高纯度酒精的折射率与标准值相比误差较小。

The ways of measuring the liquid refractive index are discussed through the width of inter- fered stripe by using experimental set of wedge interference.