拉伸法测杨氏模量快速调节十字诀  

TEN WORDS ASSISTING TO RAPID ADJUSTMENT OF YOUNG'S MODULUS EXPERIMENT

作　　者：张岩[1] 王素红[1] 

机构地区：[1]信息工程大学理学院,河南郑州450001

出　　处：《物理与工程》2016年第2期62-64,共3页Physics and Engineering

摘　　要：为解决杨氏模量实验仪调节困难和耗时长的问题,本文作者在不添加任何辅助设施并考虑减小系统误差的前提下,由实践总结出来的拉伸法测杨氏模量实验调节十字诀,为快速调节杨氏模量实验仪提供了一个可行策略.该十字诀中"水平、铅直"四字诀主要强调的是减小系统误差;"等高、共线"四字诀解决的是如何快速调节成像,同时也兼顾调节平面反射镜与望远镜光轴垂直,减小系统误差;"聚焦"则保证成像清晰无视差.实践表明,即使首次接触本实验的学生均可快速调整好实验仪器,极大提高实验效率的同时,也有助于增强学员的学习信心和兴趣.To solve the problem of difficult adjustment and long time consuming in the Young＇s modulus experiment, the author sums up ten words from experiments without any auxiliary facilities under the premise of reducing the system error. The ten words provide a feasible strategy to adjust rapidly the experimental apparatus of young＇s modulus. In the ten words, horizontal and vertical aim at reducing the system error, while contour and collinear aim at adjusting quickly imaging and contribute to reducing the system error. Focusing aims at imaging clearly and no parallax. The practice shows that the students can quickly adjust the experimental instrument, even if they do the experiment for the first time. Our method greatly improves the experimental efficiency and is very conducive to heighten the students＇ confi- dence and interests.

关 键 词：杨氏模量 十字诀 快速调节 光杠杆 

分 类 号：O4-33[理学—物理]