So, how could he know that the charge on the two particles was equal?

就是这两种粒子,电荷量是相等的？

麻省理工公开课 - 化学原理课程节选

PROFESSOR: And this is a question based on where we left off on Wednesday -- we were talking about Coulomb's force law to describe the interaction between two particles and good job, most of you got this correct.

教授：这是我们上次最后,留下的问题-我们讲到,描述粒子间相互作用的,库伦定律，很好,大部分人都做对了。

麻省理工公开课 - 化学原理课程节选

He shot alpha particles which have a charge of plus two.

他入射的阿尔法粒子带有两个正电荷。

麻省理工公开课 - 固态化学导论课程节选

They are going to accompany particles surely as every quadratic equation has two solutions.

他们是成对的粒子,正如每个二次方程都有两个根一样

耶鲁公开课 - 基础物理课程节选

The first, which I just stated, is that the deflection of that negative particle was just far and away more extreme, much, much larger than that of the positive particle. The other assumption that he made here is that the charge on the two particles was equal.

为了这么做，他又做了更多的观察,首先，像我之前已经说了，测到的负电粒子,偏转要远远,大于正电粒子,另外一个他做了一个假设。

麻省理工公开课 - 化学原理课程节选

So, what we're looking at here is the force when we have two charged particles, one positive one negative -- here, the nucleus and an electron.

我们现在研究的是,一正一负俩个带电粒子之间的,作用力-在这里。

麻省理工公开课 - 化学原理课程节选