| 单词 | Newtonian reflector |
| 例句 | In the Newtonian reflector a plane mirror or prism is situated in the axis of the tube, at the focus, to reflect the rays through an eye-piece projecting through the side of the tube. How it Works Dealing in simple language with steam, electricity, light, heat, sound, hydraulics, optics, etc., and with their applications to apparatus in common use Dr. Herschel made many observations on this portion of the heavens, using a Newtonian reflector of twenty feet focal length, and an aperture of eighteen inches. The Mirror of Literature, Amusement, and Instruction Volume 10, No. 267, August 4, 1827 |
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