| 单词 | ion burn |
| 释义 | > as lemmasion burn ion burn n. the damaging of the phosphor of a cathode ray tube by negatively ionized gas molecules produced by the electron beam and focused on to the screen; an ion spot so produced. ΘΚΠ the world > matter > physics > electromagnetic radiation > electronics > electronic devices or components > cathode-ray tube > [noun] > damage to tube ion burn1946 1946 Nature 23 Feb. 228/1 Certain types of cathode-ray tubes in which the luminous spot on the fluorescent screen is moved by magnetic fields are liable to a peculiar defect, known as ‘ion spot’ or ‘ion burn’. 1963 J. R. Davies Understanding Television ii. 62 In some cathode ray tubes, protection against ion burn is achieved by mounting part of the electron gun assembly at an angle, and..applying across the tube neck a fixed magnetic field which causes electrons only to be deflected across the screen. 2009 Internat. Jrnl. Mass Spectrometry 282 29/1 A slight ion burn in a circular shape was apparent (a few cm diameter). < as lemmas |
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