Imagine then from now on, we can find the mass of any object, right?

假设从现在开始,我们就能测量任何物体的质量了,对吧

耶鲁公开课 - 基础物理课程节选

And he was very proficient at measuring atomic mass.

他对测量原子质量很精通。

麻省理工公开课 - 固态化学导论课程节选

This is how masses can be tabulated using a spring.

这就是为什么能用弹簧测量物体质量

耶鲁公开课 - 基础物理课程节选

That's how by either balancing the unknown force with a known force or by simply measuring the acceleration as I fall towards this podium and multiplying by mass, you can find the force that exerts on me.

我们既可以让未知力与已知力平衡,也可以只测量我冲向讲台时加速度的大小,再与我的质量相乘,都能求出作用在我身上的力的大小

耶鲁公开课 - 基础物理课程节选