Payne said technicians found that seals on the hydrogen vent lines were out of alignment and they installed new ones to fix the leaks.

VOA: standard.2009.06.16

First there was the observation by Michelson who back in the late 1880s had done very precise interferal metric measurements of the hydrogen lines and had observed that the 656 nanometer line 3 associated with the transition of n equals 3 to n equals 2 was, in fact, a doublet.

首先是麦克逊,在1880年底的观察,他以公制单位对氢原子的光谱线,作了准确的，无其他因素干扰的，测量,发现当n值由3变为2时,会同时得到波长为656纳米的谱线3,实际上是有两条线。

麻省理工公开课 - 固态化学导论课程节选

In 1896, Charles Pickering from Harvard found a series of lines in starlight which he attributed to hydrogen, even though they did not fit Balmer.

在1896年，来自哈佛的查尔斯皮克林发现,一系列的星光,他认为那是氢的作用，虽然它们与巴尔末理论不符。

麻省理工公开课 - 固态化学导论课程节选

It turns out that we are far from the first people, although it felt exciting, we did not discover this for the first time here today. In fact, J.J. Balmer, JJ Balmer who was a school teacher in the 1800s, was the first to describe these lines that could be seen from hydrogen.

实际上，它第一次被发现已经是在很早之前了，虽然我们觉得很激动，但我们,并不是第一次发现这个的，事实上，一个19世纪的老师,是第一个在氢原子中发现这些谱线的人。

麻省理工公开课 - 化学原理课程节选

Because only atomic hydrogen has that set of lines which means I could then take the spectra of gas phase species and use that information to identify.

我在这抬头看看然后离开，那就是氢原子,那就意味着,我可以测定,气相种类的光谱并且运用那个信息来鉴定。

麻省理工公开课 - 固态化学导论课程节选

So, even though the lines were wrong, he says, no, that is hydrogen.

所以，即使那光线是错误的，他说，不，它就是氢。

麻省理工公开课 - 固态化学导论课程节选