In electronics, a vacuum tube, an electron tube, or valve (British usage) or, colloquially, a tube The tube was relatively immune to vibration, and thus vastly superior on . He would later help refine the triode vacuum tube. .. The screen's constant voltage also reduced the anode voltage's influence on the space charge.
Full text of "Lead refining by electrolysis" Internet Archive
THE electrolytic refining of lead bullion has now become an established . 109; extraction of the antimony, 111 ; addition of copper to the solution, 114; perfluoride .. in a press, or on horizontal cloth filters with or with out vacuum underneath. .. For ordinary tanks material passing through a screen of 1J inches and over a.