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本文介绍一种先测量单透镜的单色焦距f’、中心厚度d和曲率半径R,然后代入公式计算折射率的方法,并着重介绍了提高焦距测量精度的措施。
This paper introduces a method of measuring the monochromatic focal length f ’, the center thickness d and the radius of curvature R of a single lens, and then substituting into the formula to calculate the refractive index. The measure to improve the focal length measurement accuracy is also introduced emphatically.