A voltage is applied and the gas atoms in the tube light up. The color of the light reveals which gas it is.https://www.physik-astro.uni-bonn.de/en/news/prof-klaus-desch-macht-den-auftakt-zu-der-kinderuni-im-sommersemester-2024/uni-vl-kinderuniw-150424-055.jpg/viewhttps://www.physik-astro.uni-bonn.de/en/news/prof-klaus-desch-macht-den-auftakt-zu-der-kinderuni-im-sommersemester-2024/uni-vl-kinderuniw-150424-055.jpg/@@images/image-1200-e24168ee5d688ed8361b075b05f4e4ff.jpeg
A voltage is applied and the gas atoms in the tube light up. The color of the light reveals which gas it is.
