| 单词 | ghost image |
| 释义 | ghost image [`gōst ´im·ij] ELECTRONICS 1. An undesired duplicate image near the desired image on a television receiver or computer display screen. 2. See <<ghost pulse>> OPTICS An undesired image appearing at the image plane of an optical system; it may be a false image of the object or an out-of-focus image of a bright source of light in the field of the optical system. SPECTROSCOPY A false image of a spectral line produced by irregularities in the ruling of a diffraction grating. |
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