100多年以前,德国化学家本生利用三棱镜的分光原理,发现各种元素都具有不同的线性光谱。一天,他在实验中发现了几条暗红色谱线,并且在观察杜尔汉矿泉时,又发现了两条从未见到过的天蓝色谱线。于是,本生把形成这两种新谱线的金属元素取名为“暗红”和“天蓝”,中文名称则分别叫做“铷”和“铯”。 More than 100 years ago, German chemist Bunsen used the prism principle of spectroscopy and found that the various elements all had different linear spectra. One day, he discovered several dark red lines in his experiment, and when observing the Durghan mineral springs, he discovered two sky blue lines never seen before. So, the students to form the two new line of the metal elements named “dark red” and “sky blue”, the Chinese name is called “rubidium” and “cesium.”