Deference
发表于 2025-3-30 08:27:55
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使困惑
发表于 2025-3-30 14:29:31
Investigating the Moon’s Motion by Laser Rangingterminations have been especially interesting because radar measures distance (albeit in light-seconds rather than in meters) more directly than and independently of the classical astronomical triangulation methods. In addition to yielding precise distances, detailed examination of the reflected ene
金哥占卜者
发表于 2025-3-30 19:31:15
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interrupt
发表于 2025-3-31 00:03:26
Astrophysics and Space Science Libraryhttp://image.papertrans.cn/m/image/628063.jpg
companion
发表于 2025-3-31 01:57:06
Cassini’s Second and Third LawsIn 1693 G. D. Cassini published the three following empirical laws on the Moon’s rotational motion:
Dissonance
发表于 2025-3-31 06:44:39
The Moon’s Mechanical EllipticityIn a discussion of problems connected with the Moon’s physical libration one cannot fail to pay particular attention to the quantity ., the so-called Moon’s mechanical ellipticity.
musicologist
发表于 2025-3-31 11:48:45
Lunar Physical Libration Theorye Moon, is a very onerous task. The differential equations are complicated, mutually coupled and non-linear. The elaborate numerical treatment of . (1902) furnished solutions which remain authoritative to this day except for the modifications of . (1948) who replaced Hansen’s lunar theory with Brown’s theory.
GNAW
发表于 2025-3-31 16:39:43
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起皱纹
发表于 2025-3-31 19:39:45
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表示问
发表于 2025-3-31 21:40:34
Laser Measurement of Earth-Moon Distance and Selenographye then, there has been practically no interruption in observation of the Moon by radar, which has brought us a great deal of important information, including, in particular, a new lunar parallax value (cf. .., 1965).