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由于测量工具的某些原因,导致测量值偏大或偏小的问题,很多同学都感到困惑,笔者就这类问题谈谈解析的方法,供参考。1差值解析法(差值法)我们来看一个实例:有一根刻度尺,由于受到环境的影响,它的“50mm”刻线与“0”刻线之间的实际长度只有49mm,但其刻度仍保持均匀。若用这根刻度尺去测量某物体的长度L,测量值是偏大大还是偏小?应为多少?
Due to some reasons of measurement tools, leading to large or small measured values, many students are puzzled. The author talks about this kind of problem and discusses analytical methods for reference. 1 difference analysis method (difference method) Let’s look at an example: there is a scale, due to the influence of the environment, its actual length between the “50mm” and the “0” line is only 49mm, but its The scale remains uniform. If this scale is used to measure the length L of an object, is the measured value too large or small? How much should it be?