negative glow

noun

, Physics.

1. the luminous region between the Crookes dark space and the Faraday dark space in a vacuum tube, occurring when the pressure is low.

Word History and Origins

Origin of negative glow¹

First recorded in 1885–90

Example Sentences

Next this we have a luminous position called the “negative glow” or the “third cathode layer.”

From Project Gutenberg

We see that the electric force is very large indeed between the negative glow and the cathode, much larger than in any other part of the tube.

From Project Gutenberg

We may regard the part of the discharge between the cathode and the negative glow as a discharge taking place under minimum potential difference through a distance equal to the critical spark length.

From Project Gutenberg

Potential Difference required to produce a Spark of given Length.—We may regard the region between the cathode and the negative glow as a place for the production of corpuscles, these corpuscles finding their way from this region through the negative glow.

From Project Gutenberg

Let us now consider what will happen to these corpuscles shot out from the negative glow with a velocity depending on the cathode fall of potential and independent of the pressure.

From Project Gutenberg