更准确地探究浮沉子临界深度与其初始气体体积和初始气压关系的方法  

MORE ACCURATE INVESTIGATION INTO THE RELATIONSHIP OF ORIGINAL AIR VOLUME AND PRESSURE WITH CRITICAL DEPTH OF THE CARTESIAN DIVER

作　　者：诸思吟 周诗韵[1] ZHU Siyin;ZHOU Shiyun(Department of Physics,Fudan University,Shanghai 200433)

机构地区：[1]复旦大学物理学系,上海200433

出　　处：《物理与工程》2023年第3期57-63,共7页Physics and Engineering

摘　　要：本研究的目的是研究初始气体体积和气压对浮沉子临界深度的影响。以透明长圆柱管为容器,塑料管为浮沉子,我们通过实验证明了临界深度hc与浮沉子内部初始气体体积V_(air0)的线性关系,以及临界深度hc与长管内初始气压Ptube的线性关系。为了提高实验的准确性,必须仔细控制自变量V_(air0)。因此,我们重点关注临界深度hc与初始气体体积变化量ΔV_(air0)之间的关系,而不是原来的V_(air0),从而通过使用注射器向浮沉子内添加空气,将气体体积控制精度从1mL提高到了0.01mL。The purpose of this paper is to investigate the effect of the original air volume and air pressure on the critical depth of the Cartesian diver.Using a transparent cylindrical tube as a container and a plastic tube as the Cartesian diver,the linear relationship between the critical depth hc and the volume of trapped air inside the diver V_(air0),as well as the linear relationship between the critical depth hc and the initial pressure inside long tube Ptube,were proven.In order to improve the accuracy of the experiment,the independent variable of V_(air0) must be carefully controlled.Therefore,we focused on the relationship between the critical depth hc and the change of trapped air volumeΔV_(air0),rather than the original V_(air0),thereby improving the control accuracy from 1mL to 0.01mL by adding air to the Cartesian diver with a syringe.

关 键 词：浮沉子 临界深度 实验精度提高 

分 类 号：O31[理学—一般力学与力学基础]