It is a glass tube. He wants to narrow the light so he puts a couple of slits here.
这是根玻璃管子,他想要减少光的发散,所以在这里开了几个口子。
He had a tube with electrodes potted in it filled with atomic hydrogen. And by applying a voltage, he was able to get the gas to glow.
那是个装满了氢原子并含有电极的管子,通过增加一个电压,他让气体燃烧起来了。
Then here's the favorite of all time, vacu-pants, attached via the hose to your vacuum cleaner.
这是最受喜欢的,真空裤法,需要与真空吸尘器的管子相连
Ask somebody, "What if you took a tube and you squirted water through it?
当问到,"要是你拿一根管子,向里面注水,让水喷出来
Let's take a look inside that tube. Let me redraw it.
我们来看看管子的内部,再重新画张图。
You have a tube, a transparent--a tube--a hollow tube, and at the top of the tube you throw a ball through so it whips through the tube and it comes out.
用一根管子,一根透明中空的管子,从管子最上面,你丢进去一个小球,小球迅速穿过管子,飞出来
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