'Crookes space' definitions:
Definition of 'Crookes space'
From: GCIDE
- Crookes space \Crookes space\ (kr[oo^]ks). [After Sir William Crookes, English chemist, who first described it.] (Physics) 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; -- called also {Crookes layer}. [Webster 1913 Suppl.]