Ramsden circle
Optics
noun
The exit pupil of a telescope or microscope; the circle of least diameter of the bundle of rays leaving the eyepiece.
Origin
Late 19th century.
| 单词 | Ramsden circle |
| 释义 | Ramsden circleOptics noun The exit pupil of a telescope or microscope; the circle of least diameter of the bundle of rays leaving the eyepiece. Origin |
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