密立根油滴实验,设备简单,方法巧妙,所得结果精确可靠、堪称实验物理的典范。但在实验数据处理方面,特别是用计算机处理数据方面还不够理想。本文介绍直接求解密立根油滴半径的方法和在考虑误差的情况下,用计算机求各油滴所带电量测定值Q(K)的最大公约数的一种新方法及程序。该程序思路清晰,说服力强,基本解决了在一定误差范围内求各油滴电量Q(K)~*的最大公约数问题。 Millikan oil drop experiment, equipment is simple, clever way, the result is accurate and reliable, called experimental model of physics. However, in the experimental data processing, especially the computer processing data is not ideal. This paper presents a direct method for solving the oil droplet radius of Millikan and a new method and program for calculating the greatest common divisor of Q (K) of the amount of charge held by each oil droplet with consideration of error. The program has clear thinking and strong persuasion, which basically solves the problem of finding the greatest common divisor of Q (K) ~ * of oil drop within a certain error range.