单缝衍射法测量金属线胀系数装置的研究  

Measuring metal linear expansion coefficient by means of single-slit diffraction

作　　者：邹艳[1] 

机构地区：[1]德州学院物理与电子信息学院,山东德州253023

出　　处：《物理实验》2014年第7期20-23,共4页Physics Experimentation

基　　金：山东省教育科学"十二五"规划课题(No.2011JG442)

摘　　要：利用夫琅禾费单缝衍射中衍射条纹对缝宽的线性放大作用,设计了单缝衍射法测量金属线胀系数的实验装置.采用可控比例杠杆,使衍射狭缝随金属伸长按一定的比例变宽,扩大了测温范围.The apparatus for measuring metal linear expansion coefficient by means of single-slit diffraction was designed according to the theory of single-slit diffraction .The apparatus adopted con-trollable ratio leverage ,so that it could work in a wide temperature range because the width of the sin-gle-slit was proportional to the expansion of the metal .

关 键 词：单缝衍射 金属线胀系数 微小位移测量 

分 类 号：O436.1[机械工程—光学工程] O343.6[理学—光学]