Geissler tube
/ˈgaɪslə(r)/noun
- a sealed tube of glass or quartz with a central constriction, filled with vapour for the production of a luminous electrical discharge盖斯勒（真空放电）管。
词源
mid 19th cent.: named after Heinrich Geissler （1814-79）, the German mechanic and glass-blower who invented it.