在许多物理实验中,都需要进行多次测量,但根据实验的要求,多次测量的目的却有所不同。一、“多次测量”取平均值,减小偶然误差每个物理量都有一个真实值,在测量过程中,实验中的误差是不可避免的。实验者在操作的过程中,由于偶然的因素可能使测量结果有时偏大、有时偏小,当多次重复同一测量时,偏大和偏小的机会比较接近。为了使测量值更接近真实值达到测量的准确 In many physical experiments, multiple measurements are required, but the purpose of multiple measurements is different depending on the requirements of the experiment. One, “multiple measurement ” averages, reduces accidental error Each physical quantity has a real value, in the course of measuring, the error in the experiment is unavoidable. During the operation of the experimenter, due to accidental factors, the measurement result may be sometimes too large and sometimes too small. When the same measurement is repeated multiple times, the chances of oversizing and undersizing are relatively close. In order to make the measured value closer to the true value, accurate measurement is achieved