摘要
拉伸法测定金属丝杨氏弹性模量实验是力学的一个基础性实验.本文提出一种创新方法并研制了新的仪器,用微型激光器代替原来的尺读望远镜,大幅提高了测量精度,明显改善了实验操作性.实践证明,该仪器具备良好教学效果.
The stretch method for measuring Young＇ s elasticity modulus of wire is a basic experiment of mechanics, but the present instrument is difficult to meet the teaching demand. We present an innovative method and develop the new instrument by using minilaser instead of telescope, which can greatly improve the accuracy of determination measurement and make operation become easy. It is shown that the instrument has favorable teaching effect.
出处
《大学物理》
北大核心
2012年第7期37-39,共3页
College Physics
基金
合肥师范学院教研项目(2010YJ26)
合肥师范学院教改示范项目(2011JGSF02)资助
关键词
杨氏模量测定仪
拉伸法
微型激光器
Young＇ s modulus measuring instrument
stretch method
minilaser
