Crookes space

noun

Crookes space

noun

Etymology After Sir William Crookes, English chemist, who first described it.

Natural sciences, Physical sciences, Physics Dated The dark space within the negative-pole glow at the cathode of a vacuum tube, observed only when the pressure is low enough to give a striated discharge.

Synonyms: Crookes layer

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.