The coloured band into which a beam of light is decomposed by means of a prism or diffraction grating. Also, a dark band containing bright lines…
| 单词 | θ82318 |
| 释义 | the world > matter > colour > [noun] > spectrum (4) spectrum1672 The coloured band into which a beam of light is decomposed by means of a prism or diffraction grating. Also, a dark band containing bright lines… Subcategories:— seven colours of (2) — periodical colours (1) |
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