多思路巧妙测量阻尼常数及计时仪器的开发  

Measurement of the Damping Constant with Ingenious Idea and Development of the Chronometric Instrument

作　　者：黄育红[1] 向贞明[1] 刘小凡 李娟[1] 辛云宏[1] 

机构地区：[1]陕西师范大学,陕西西安710062 [2]陕西省子长县子长中学,陕西延安717300

出　　处：《大学物理实验》2013年第6期8-12,共5页Physical Experiment of College

基　　金：中央高校基本科研业务费专项资金(GK261001150);陕西师范大学实验技术研究项目(SYJS201218)

摘　　要：本文从物理实验测量和计时仪器开发两个方面同时入手,从运动学角度出发,分别选用U形和条形遮光片,且灵活利用通用计数器的各个功能,综合提炼出7种实验方案测量阻尼常数,其测量值在1.31～1.53之间,实验结果重复性和一致性较好.同时开发新的计时仪器,直接应用于本实验,使测量过程变得简单易行.This article focuses on both the physical experimental schemes and the instrument develop- ment. Considering from the analysis angles of kinematics, as well as integrated application of universal counter, U-shape and strip light barriers, seven experimental schemes measuring the damping constant are systematically put forward. The experimental values are between 1.31-1.53 with good repeatability and consistency. Moreover,new timing equipment is designed and developed to be directly applied to the measurement of damping constant, which will make the experimental process easier and simpler.

关 键 词：阻尼常数 下滑上滑法 通用计数器 计时仪器 

分 类 号：O4-34[理学—物理]