| 单词 | optic pencil |
| 释义 | > as lemmasoptic pencil ΘΚΠ the world > matter > physics > electromagnetic radiation > light > [noun] > rays or waves > set of pencil1665 optic pencil1704 cone of rays1706 sheaf1863 wave group1923 1704 J. Norris Ess. Ideal World II. vii. 360 Called the optick pencil, as being the instrument whereby the pictures or images of things are delineated to the eye. 1815 Philos. Trans. (Royal Soc.) 105 297 The hole through which they pass in coming to the eye should be much larger than the diameter of the optic pencils, and considerably nearer the glass than their focus. < as lemmas |
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