Definitionn. (astronomy) a real or apparent slow oscillation of a moon or satellite
Last update: July 14, 2015
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By De la Rue's advice, Pritchard began his career there with a determination of the physical libration of the moon, or the nutation of its axis. [Please select]
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] [Footnote 32: _libertas, librare, libratio, libra_,--liberty, to liberate, libration, balance (pound),--words which have a common derivation. [Please select]
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He amuses his old age with the studies of his youth and manhood, and writes dialogues on Motion, and even discovers the phenomena of the moon's libration; and by means of the pendulum he gives additional importance to astronomical science. [Please select]
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