| 单词 | crookes dark space |
| 释义 | Crookes dark space in British English (krʊks dɑːk speɪs) noun another name for Crookes space Crookes space in British Englishnoun a dark region near the cathode in some low-pressure gas-discharge tubes Also called: Crookes dark space Crookes dark space in American Englishnoun Physics the dark space between the cathode glow and the negative glow in a vacuum tube, occurring when the pressure is low Also called: Crookes space Word origin [1890–95; after Sir W. crookes]This word is first recorded in the period 1890–95. Other words that entered Englishat around the same time include: blip, masochism, phoneme, plein-air, takedown |
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