牛顿环中心斑对曲率半径的影响

The Effect of the Central Spot in Newton’s Ring on the Radius of Curvature

对牛顿环测定透镜的曲率半径实验原理以及牛顿环中心暗斑大小对曲率半径影响进行了探讨分析。通过调节不同型号牛顿环的中心暗斑,多次测量并处理实验数据,结果表明牛顿环中心暗斑愈大,平凸透镜的曲率半径就愈大,产生的与其相对应的实验误差就愈大。

The experimental principle of the radius of curvature of lens by Newton’s ring and the effect of the size of dark spot in the center of Newton’s ring on the radius of curvature are discussed and analyzed.The center of different types of Newton’s ring are adjusted,the experimental data are measured and processed repeatedly.The results indicate that the lager the dark spot in the center of Newton ring,the lager the radius of curvature,furthermore,the lager the experimental error corresponding to it.