And what he used was a detector here, so he here could detect how many particles were hitting this detector.

粒子打中了探测器，这个探测器是他,和他的一个博士后叫Hans，Geiger的人。

麻省理工公开课 - 化学原理课程节选

And this is exactly what happened with Marsden who discovered that when he shot the alpha particles at the gold foil he detected something on his detector that click, click, click went a little bit faster.

而对于Marsden来说,就是这样，他发现当他用alpha粒子,轰击金箔的时候，探测器哒哒哒得更快了,他发现一分钟。

麻省理工公开课 - 化学原理课程节选