【摘要】 牛顿环可以用来测量平凸透镜的曲率半径，但是测量暗环直径的过程中，对十字叉丝与暗环的相切位置一直没有统一的规定。本文经过数据对比，认为二者外切时采集数据的计算结果最接近标准值。更多还原

【Abstract】 Newton ring can be used to measure the curvature radius of plane-convex lens, but there is no uniform regulation on the tangent position of cross wire and dark ring in the process of measuring the diameter of dark ring.After data comparison, it is considered that the calculation results of the data collected when the two cutting are closest to the standard value.更多还原