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meridian photometer
释义
meridian photometer
meridian photometer
[
mə′rid·ē·ən fə′täm·əd·ər
]
(astronomy)
An instrument in which mirrors are used to bring the light from two stars which are at or near the celestial meridian simultaneously, but at different altitudes, to a common focus, to compare their brightness.
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更新时间:2026/10/26 10:20:42