测定杨氏模量实验中测量尺的改进前后的不确定度比较  

The comparison of uncertainty before and after improvement of measuring ruler in the experiment of measuring Yangshi modulus

作　　者：崔玉[1] 张俊[1] 

机构地区：[1]江苏省淮阴工学院数理学院,江苏淮安223001

出　　处：《南昌教育学院学报》2012年第11期77-78,共2页Journal of Nanchang College of Education

摘　　要：在普通物理的力学实验中,常用拉伸法测金属丝的杨氏弹性模量。实验中用光杠杆法测定微小长度的改变,采用望远镜、标尺系统读数。本文探讨一种改进标尺系统的方法,减小实验误差,提高实验的精确度。In the general physics experiment,commonly uses tensile test of metal wire Yangshi modulus.Using optical lever method for the determination of the minimal length change in experiments,using the telescope,scale system to read.This paper discusses an improved scale system,reduce the experimental error,improve the accuracy of experiment.

关 键 词：杨氏模量 游标卡尺 

分 类 号：TH-3[机械工程]