discharge tube

American  

noun

Electronics.

1. gas tube.

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discharge tube British  

noun

1. electronics an electrical device in which current flow is by electrons and ions in an ionized gas, as in a fluorescent light or neon tube

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discharge tube Scientific  

1. A closed vessel having electrodes at either end and containing a gas at low pressure. When a sufficient voltage is applied to the electrodes, an electric current flows through the gas. Discharge tubes can be used to prevent current flow below a certain voltage; they can also function as lamps by the use of ionizing gas, which glows when current flows through the tube.

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Etymology

Origin of discharge tube

First recorded in 1895–1900

Example Sentences

"What we've done is to place a small piece of silicon in the quartz discharge tube, allowing a different plasma to be generated, one that is not filamentary and is more efficient at creating active species when interacting with water," explained Professor María C. García.

From Science Daily

Congress is once again looking at ways to avoid a shortage of helium gas, glowing above in a discharge tube shaped into the element's atomic symbol.

From Science Magazine

The spectrum of helium as observed in a discharge tube is distinguished by a moderate number of brilliant lines, distributed over the whole visual spectrum.

From Project Gutenberg

In my experiments the primary coil was connected to earth, and, as a further precaution, the primary was separated from the discharge tube by a screen of blotting paper, moistened with dilute sulphuric acid, and connected to earth.

From Project Gutenberg

I have now almost finished writing out, and hope very shortly to publish, an account of these and a large number of allied experiments, including some analogous to those mentioned by Mr. Tesla on the effect of conductors placed near the discharge tube, which I find, in some cases, to produce a diminution, in others an increase, in the brightness of the discharge, as well as some on the effect of the presence of substances of large specific inductive capacity.

From Project Gutenberg