拉伸法测钢丝杨氏模量实验中减小不确定度的一种方法

摘要

For experiment measuring metals of Young’s Modulus using stretched method,Using verni-er caliper measurement instead of ruler,it increases the reading precision two-digit from telescope,and de-creases the Young’s Modulus’uncertainty of one order of magnitude.This method is simple and easy.It im-proves the feasibility of experiment verification and widens the field to the research of light-lever measure-ment of minimal quantity.%拉伸法测杨氏模量试验中，采用游标卡尺代替标尺进行测量读数，方法简单易行，望远镜内读数精度提高两位，并使最终杨氏模量测量结果的不确定度降低了一个数量级。对光杠杆测量微小变化量的实验研究，提高了实验分析验证的可行性，同时也拓宽了该研究领域。