01 A glass tube provided with platinum electrodes, and containing some gas under very low tension, which becomes luminous when an electrical d…
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A glass tube provided with platinum electrodes, and containing some gas under very low tension, which becomes luminous when an electrical discharge is passed through it; -- so called from the name of a noted maker in germany. It is called also Plücker tube, from the German physicist who devised it.(Elec.) Also: Plücker tube