Geissler tube(redirected from Crooke's tube)
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Related to Crooke's tube: William Crookes, cathode ray
(General Physics) a glass or quartz vessel, usually having two bulbs containing electrodes separated by a capillary tube, for maintaining an electric discharge in a low-pressure gas as a source of visible or ultraviolet light for spectroscopy
[C19: named after Heinrich Geissler (1814–79), German mechanic]