用弦振动法测量固体的密度  

Using the string vibration method for measuring the density of the solid

作　　者：李应发[1] 

机构地区：[1]贵州师范大学物理与电子科学学院,贵州贵阳550001

出　　处：《贵州师范学院学报》2013年第3期21-23,共3页Journal of Guizhou Education University

基　　金：贵州省科学技术基金项目(黔科合J字[2010]2137号);(黔科合J字[2012]2275号)

摘　　要：物体的密度在普通物理实验中常用流体静力称衡法或比重瓶法来测量。提出一种新的测量密度的方法—弦振动法,并对测量原理公式进行较为详细的推导,用测量结果与流体静力称衡法的测量值进行比较,结果表明用弦振动测量固体的密度也较准确。The measurement of density is one of the classic physics experiments. Generally, the hydrostatic weig- hing method or the pycnometer method is used. This paper presents a new method for measuring density by the string vibration, and the measuring formula is derived in detail. Compared with the measuring result of the hydrostatic weig- hing method, the string vibration is more accurate.

关 键 词：弦振动 固体 密度 测量 

分 类 号：O31[理学—一般力学与力学基础]