摘要
介绍了一种测量空气摩尔质量的新方法,以声速测量仪测量某一温度下的声速值为基础,通过推导声速与空气摩尔质量之间的关系,间接测量出了空气摩尔质量。此方法测量原理简单,操作方便,测量结果与标准值相比,相对误差较小,说明该方法确实可行。
A new method for measuring the molar mass of air is introduced.The sound velocity of a certain temperature is measured by a sound speed measuring instrument.The relationship between the sound speed and the molar mass of air is derived,and the molar mass of air is measured in the near and indirect way.The method has the advantages of simple measurement principle and convenient operation,and the measurement result is relatively small compared with the standard value,and the method is proved to be feasible.
作者
高月科
刘艳峰
刘兴龙
GAO Yueke;LIU Yanfeng;LIU Xinglong(College of Physics and Electronic Information,Yan’an University,Yan’an 716000,China)
出处
《大学物理实验》
2020年第5期20-23,共4页
Physical Experiment of College
基金
延安大学研究生教育教学改革研究项目(YDYJG2018017)。
关键词
声速
测量
空气摩尔质量
speed of sound
measure
the molar mass of the air
