And so, Rutherford had a fellow working in his lab by the name of Geiger. And, Geiger invented a detector.

卢瑟福的一个实验同事,叫做盖革，他发明了一种探测器。

麻省理工公开课 - 固态化学导论课程节选

These are photodetectors, band gap two electron volts, respond to visible light.

这是光电探测器，能带隙为2电子伏，当它反应于可见光。

麻省理工公开课 - 固态化学导论课程节选

You can take these big risks of time, and if at the end of the day there's nothing to detect, you still know how to build a detector.

如果最后你什么都没测到，你至少知道了,怎么造一个探测器,所以如果你们。

麻省理工公开课 - 化学原理课程节选

It works by a control mechanism called negative feedback, and the thermostat is measuring the temperature and then sending a signal to a heater somewhere.

是通过一种叫做负反馈的控制机制,探测器测量温度,再把信号传给加热器

耶鲁公开课 - 生物医学工程探索课程节选

As an undergrad, you don't have to worry about it, you're just worried about learning.

我们还要造一个新的探测器,这会不会太浪费时间？作为一个本科生,你就不用担心这个了，你可以在上面花时间。

麻省理工公开课 - 化学原理课程节选

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

They are made of organic matter:the same rules, the same laws of chemistry that apply to what makes this laser glow green apply to what makes these photodetectors work.

而是由有机物制作的，同样的规律，它与应用于让激光的光芒变绿,以及使这些光电探测器工作,的化学是一样的规律。

麻省理工公开课 - 固态化学导论课程节选

You would make an excuse and say the detector isn't working.

你可以找个理由,说探测器坏了。

麻省理工公开课 - 固态化学导论课程节选

So, some people might say, why are we doing this?

如果我们把探测器放到旁边的地方？

麻省理工公开课 - 化学原理课程节选

If the temperature drops below a certain level it sends a signal, 'turn on the heat', and that signal stays on until it gets a negative signal to turn off.

如果温度降到一定程度以下时,探测器会发送一个信号,打开加热器,直到加热器再收到关闭的信号,它就会一直开着

耶鲁公开课 - 生物医学工程探索课程节选

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