用立式线胀仪与SPSS标定金属线胀系数  

Calibrate Vertical and Linear Expansion Coefficient of Metal with Vertical Linear Expansion Apparatus and SPSS

作　　者：陈琪[1] 王新春[1] 祝飞霞[1] 王昆林[1] 

机构地区：[1]楚雄师范学院,云南楚雄675000

出　　处：《大学物理实验》2013年第6期105-107,113,共4页Physical Experiment of College

基　　金：国家特色专业项目资助(12467)

摘　　要：以铜棒为研究对象,对立式线胀仪实验系统进行适当的改进与调试,通过测量原理、不确定度的分析,用SPSS的曲线估计功能分析实验数据,得出系统长度-温度复合量与光杠杆镜面到直尺距离的定标曲线,并验证它们之间存在线性关系,由此标定出铜棒的线胀系数,用置位概率为95%的不确定度对实验数据进行分析与估算,最终得出较为合理的实验结果。We study copper rod, improve and debug the vertical and linear expansion experiment sys- tem. According to measurement principle and uncertainty analysis we obtain calibration curve between compound variable of system length-temperature and the distance from optical lever mirror to rule, and testify the linear relationship between them. So, we calibrate linear expansion coefficient of copper rod. We analyze and evaluate the experiment data and result with the uncertainty confidence probability of 95~. It＇s shown that we gain reasonable experiment result.

关 键 词：立式线胀仪 SPSS长度-温度复合量 镜面到直尺距离 线性分析 线胀系数 

分 类 号：O4-33[理学—物理]