根据公式ρ=m/v可知,要想测量出某种物质的密度,必须测量出该物质的质量m和体积v,如何让测量这两个物理量?如何减小误差?如何处理数据?下面的内容就是关于这方面的问题分析。一、天平的使用天平是一种非常精密的仪器,关于它的使用规范,有许多细节值得我们细细研究。 According to the formula ρ = m / v, we can see that in order to measure the density of a substance, we must measure the mass m and volume v of the substance. How to measure these two physical quantities? How to reduce the error? How to deal with the data? Content is on this issue analysis. First, the use of the balance The balance is a very sophisticated instrument, on its use of norms, there are many details worth our careful study.