落球法粘滞系数测量仪的改进

doi:10.14139/j.cnki.cn22-1228.2023.01.019

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摘要

针对落球法粘滞系数测量实验中的弊端:难以保证小球从中心释放、人工计时误差较大，对粘滞系数测量仪进行改进。借助自动升降的小球释放装置，方便对小球的初始位置进行调整且保证了小球从液面中心释放;金属探测尺能够对小球的下落位移实时监测，密封板和出料管的设计可达到对液体的收集效果。实验结果表明，改造后的装置粘滞系数测量值误差较小，可信度较高，实验结果较为精确。

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	张庆宇
	李霞
	冯秀绒

关键词: 落球法粘滞系数仪器改进

Abstract:

In view of the disadvantages of the viscosity coefficient measurement experiment by the falling ball method:it is difficult to ensure that the ball is released from the center，and the manual timing error is large， the viscosity coefficient measuring instrument is improved．With the help of the automatic lifting ball release device，it is convenient to adjust the initial position of the ball and ensure that the ball is released from the center of the liquid surface;the metal detector can monitor the falling displacement of the ball in real time．The design of the sealing plate and the discharge pipe can achieve the collection effect of the liquid． The experimental results show that the measured value of viscosity coefficient by the modified device has less error，higher reliability and more accurate experimental results．

Key words: falling ball method viscosity coefficient instrument improvement

出版日期: 2023-02-25 发布日期: 2023-02-25 整期出版日期: 2023-02-25

ZTFLH:

O 4-33

引用本文:

张庆宇 , 李霞 , 冯秀绒 . 落球法粘滞系数测量仪的改进 [J]. 大学物理实验, 2023, 36(1): 90-94.
ZHANG Qingyu , LI Xia , FENG Xiurong . The Improvement of the Measuring Instrument for Viscosity Coefficient by Falling Ball Method . Physical Experiment of College, 2023, 36(1): 90-94.

链接本文:

http://dawushiyan.jlict.edu.cn/CN/10.14139/j.cnki.cn22-1228.2023.01.019 或 http://dawushiyan.jlict.edu.cn/CN/Y2023/V36/I1/90

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