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。

麻省理工公开课 - 固态化学导论课程节选

This is a glass tube. There are some feedthroughs here to allow electrodes to be potted.

这是个玻璃管，这里有些引线,可以使电极被射击。

麻省理工公开课 - 固态化学导论课程节选