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在物理实验教学中已推广和采用不确定度的概念,并用不确定度取代误差来评价测量结果。本文现结合十一线电位差计测量电池电动势和内阻实验,尝试用不确定度来表示测量结果。十一线电位差计是利用补偿法原理组装的测量电池电动势和内阻的实验装置,它具有结构简单、直观、便于分析和讨论等特点,而且测量结果也比较准确。所提供的仪器有:
In the physics experiment teaching, the concept of uncertainty has been popularized and adopted, and the uncertainty has been replaced by the uncertainty to evaluate the measurement results. In this paper, combined with eleven-wire potentiometer to measure the battery electromotive force and resistance experiment, try to use uncertainty to represent the measurement results. Eleven-wire potentiometer is the use of compensation principle to assemble the battery emf and internal resistance of the experimental device, which has a simple structure, intuitive, easy to analyze and discuss the other characteristics, and the measurement results are more accurate. The instruments provided are: