摘要
在不增加任何实验装置和改变测温系统的条件下,采用降温测量的方法测定了金属线胀系数。比较了升温测量和降温测量的实验结果,并对测量进行了误差分析。结果显示降温测量能有效地解决了升温测量结果偏差太大的问题。
Under the condition of no changes in experimental devices and the temperature measuring system,this paper adopts cooling method to measure the linear expansion coefficient of metal. Comparison is made between the heating and cooling measurement, and the measurement errors were analyzed. The results show that the cooling measurement can effectively solve the large deviations problem in the heating method.
出处
《大学物理实验》
2010年第1期30-32,共3页
Physical Experiment of College
基金
广西师范大学2009年教育教学软件立项项目
广西师范大学2009年本科精品课程项目
关键词
线胀系数
光杠杆
最小二乘法
linear expansion coefficient
optical lever
least-squares method