# Geissler tube

> English word · Noun

## Definitions
1. An early gas discharge tube used to demonstrate the principles of electrical glow discharge.

## Etymology
After Heinrich Geissler, who invented it in 1857.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/geissler-tube