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我们知道,在物理实验中进行多次测量取得多个(或多组)数据,再求这些数据的平均值,可以使偶然误差的正负尽量相互抵消,从而提高测量的准确度,这种数据处理方法在物理实验中有着广泛的应用。在高中物理教材中,关于匀加速直线运动(包括自由落体运动)加速度的测定,介绍过闪光照相法和打点计时器纸带记录法。对于这两种方法的数据处理,教材先后采用过三种不同的方法。虽然这三种处理方法不同,但都有着共同的指导思想,那
We know that performing multiple measurements in a physical experiment to obtain multiple (or multiple) sets of data, and then calculating the average value of these data, can make the positive and negative errors of accidental errors cancel each other as much as possible, thereby improving the accuracy of the measurement. Treatment methods have a wide range of applications in physical experiments. In high school physics textbooks, the determination of the acceleration of uniform acceleration linear motion (including free-fall motion) has been described by the flash photography method and the dot counter tape recording method. For the data processing of these two methods, the textbook has adopted three different methods. Although these three methods are different, they share a common guiding principle.