摘要
利用 CCD探测器分别测出常温和高温下金属丝衍射花样相邻暗纹的间距 ,用光学高温计测出加热时的温度值 ,从而求出线膨胀系数 .
The distance between adjacent dark fringes of diffraction fringe of wire is determined at low and high temperature by CCD detector, the value of high temperature is measured by pyrophotometer, and the coefficient of linear expansion of wire is calculated.
出处
《物理实验》
北大核心
2002年第12期38-39,48,共3页
Physics Experimentation
