英语词汇“the longitude of the epoch”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

4. Astronomy. The point of time at which any phenomenon takes place; an arbitrarily fixed date (often the first day of a century or half-century) for which the elements necessary for computing the place of a heavenly body are tabulated. Also, the heliocentric longitude of a planet at such a date (more fully, the longitude of the epoch).

ΘΚΠ

the world > time > particular time > [noun] > time of occurrence > of astronomical event

epoch1715

α.

1715 tr. D. Gregory Elements Astron. I. iii. §40. 466 Their Mean Motions made between the said Epocha and the Time proposed, being equated.

1789 Herschel in Philos. Trans. (Royal Soc.) 80 20 I followed the shadow of the satellite..up to the center, in order to secure a valuable epocha.

1795–8 T. Maurice Hist. Hindostan (1820) I. i. iv. 128 By astronomers the word epocha is used to denote that particular point of the orbit of a planet, wherein that planet is, at some known moment of mean time, in a given meridian.

γ. 1790 W. Herschel in Philos. Trans. (Royal Soc.) 80 488 Epochs of the mean longitude of the satellites.1834 Nat. Philos. (Libr. Useful Knowl.) III. Astron. ix. 191/2 The longitude of the sun, at some one time, which is called the epoch.1858 J. F. W. Herschel Outl. Astron. (ed. 5) iv. 168 They [sc. the clocks] would be found..to differ by the exact difference of their local epochs.

单词	the longitude of the epoch
释义	> as lemmas the longitude of the epoch 4. Astronomy. The point of time at which any phenomenon takes place; an arbitrarily fixed date (often the first day of a century or half-century) for which the elements necessary for computing the place of a heavenly body are tabulated. Also, the heliocentric longitude of a planet at such a date (more fully, the longitude of the epoch). ΘΚΠ the world > time > particular time > [noun] > time of occurrence > of astronomical event epoch1715 α. 1715 tr. D. Gregory Elements Astron. I. iii. §40. 466 Their Mean Motions made between the said Epocha and the Time proposed, being equated. 1789 Herschel in Philos. Trans. (Royal Soc.) 80 20 I followed the shadow of the satellite..up to the center, in order to secure a valuable epocha. 1795–8 T. Maurice Hist. Hindostan (1820) I. i. iv. 128 By astronomers the word epocha is used to denote that particular point of the orbit of a planet, wherein that planet is, at some known moment of mean time, in a given meridian. γ. 1790 W. Herschel in Philos. Trans. (Royal Soc.) 80 488 Epochs of the mean longitude of the satellites.1834 Nat. Philos. (Libr. Useful Knowl.) III. Astron. ix. 191/2 The longitude of the sun, at some one time, which is called the epoch.1858 J. F. W. Herschel Outl. Astron. (ed. 5) iv. 168 They [sc. the clocks] would be found..to differ by the exact difference of their local epochs. extracted from epochn. < as lemmas
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