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The first thing I have to do is give you understanding of the physics of the gas discharge tube.
首先要做的就是让你们理解,气体放电管的物理学原理。
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This is the diagram taken right from your text, there are the two electrodes coming in and this is atomic hydrogen in the gas tube.
这是从教科书上复制下来的图表，这里有两个电极进来,这是气体管中的氢原子。
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Or in many kinds of gas refrigerators where you push a gas through a nozzle close to room temperature, what you find is that the gas coming out on the other side under lower pressure is cooler than the gas that went through on the other side.
或者在很多种压缩气体式冰箱中,你让气体通过接近室温的管口,你会发现从压力低的一边,出来的气体比通过,另一边的气体更冷,真正的冰箱实际上通过。
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I could take an unknown gas and put it in and measure it and then say, wow, those are the lines that are characteristic of sodium.
我取一种未知气体，把它放到管里,然后检测它，哇，这些线是钠的特征。
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And what is inside the gas discharge tube is gas at low pressure.
气体放电管里,有处于低压下的气体。
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And so if he gets the voltage high enough, this gas discharge tube will glow.
如果管中的电压足够高的话，气体放电管将会发光燃烧。
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We have come a long way from the gas discharge tube to the heavens.
我们在从气体放电管到,世界还有很长的路要走。
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That is the operation of the gas discharge tube.
这就是气体放电管放电的过程。
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He was doing experiments in a gas discharge tube.
实验是在一个气体放电管中进行的。
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Here is the gas discharge tube.
这里是个气体放电管。
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