The tube with a slit and lens (or the lens itself) used in the spectroscope to collect the light and throw it upon the prism in parallel rays.
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| 单词 | θ64835 |
| 释义 | the world > physical sensation > sight and vision > optical instruments > instruments for observing > [noun] > light or radiation > parts of (1) collimator1865 The tube with a slit and lens (or the lens itself) used in the spectroscope to collect the light and throw it upon the prism in parallel rays. |
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