Gas-filled tube

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Science and technology

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What Wikipedia says

A gas-filled tube, also commonly known as a discharge tube or formerly as a Plücker tube, (after the German mathematician and physicist) is an arrangement of electrodes in a gas within an insulating, temperature-resistant envelope.

Excerpt from the Wikipedia article “Gas-filled tube”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Alchemist-hp www.pse-mendelejew.de, CC BY-SA 2.0 de, via Wikimedia Commons.