落球法粘滞系数测定仪的改进  

Improvement on Viscosity Coefficient Measuring Instrument by Falling Ball Method

作　　者：杜宁 张璇 Du Ning;Zhang Xuan(Basic Teaching Department of Tangshan University,Tangshan,Hebei 063000)

机构地区：[1]唐山学院基础教学部,河北唐山063000

出　　处：《物理通报》2020年第4期93-93,98,共2页Physics Bulletin

摘　　要：为解决目前教学用落球法粘滞系数测定仪使用中出现的调节精度低、测量计算琐碎等诸多缺陷,我们改进了测定仪装置,通过增加光电传感器和光电计时器,使其更易于精准调节和测量,从而提高实验教学效率.In order to solve many defects such as low adjustment accuracy and trivial measurement calculation in the use of the falling ball viscosity coefficient tester for teaching,we have improved the tester device.By adding a photoelectric sensor and a photoelectric timer,it makes it easier to accurately adjust and measure to improve the efficiency of experimental teaching.

关 键 词：粘滞系数 光电传感器 光电计时器 

分 类 号：O4-33[理学—物理]