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多次测量在物理规律的探究实验中是一种常用的方法,而多次测量的目的因不同实验而不同.在需要测出某个物理量的探究实验中,多次测量的目的是为了求平均值以减小误差,比如用刻度尺测量书本的长度;在需要得出规律的探究实验中,多次测量的目的是为了排除错误和偶然性,得出科学的普遍性结论,比如探究电路中电流的规律;在需要测量不同条件下某个物理量的实际值的探究
Multiple measurements in the physical laws of the exploration experiment is a commonly used method, and the purpose of multiple measurements due to different experiments in the need to measure a physical quantity of the inquiry experiment, the purpose of multiple measurements in order to average Value to reduce the error, such as using a scale to measure the length of the book; In the need to study the law of the inquiry, the purpose of multiple measurements in order to eliminate errors and chance, come to scientific general conclusions, such as exploring the circuit current The law; in the need to measure the actual value of a physical quantity under different conditions to explore