| 单词 | libration |
| 例句 | They are called libration points, from the Latin word for balance, so we could properly name our new country Libra. Flying to the Moon: An Astronaut's Story 1976-01-01T00:00:00Z His study of the moon’s libration shows that he was looking for new observations with which to solve cosmological issues. The Invention of Science 2015-09-17T00:00:00Z Using documentary evidence in the Ansel Adams Archive and lunar libration, a phenomenon that “affects the visibility of lunar surface features,” according to Dr. Olson, they narrowed down the possibilities. When the Light, Shadow and Stars Aligned: Standing Where Ansel Adams Stood 2023-03-13T04:00:00Z He was traveling north on the libration zone train, recording one of his travelogue narrations to distract himself from his worry about his new young American acquaintance, among other worries. This political thriller brings murder to the Moon 2018-10-18T04:00:00Z The current libration amplitude is 125°, with a period of about 660 years. A retrograde co-orbital asteroid of Jupiter : Nature : Nature Research 2017-03-28T04:00:00Z Rather than rely on more studies of Enceladus’s gravitational field, researchers relied upon seven years of images of Enceladus’s surface to measure the moon’s libration—how it wobbles as it orbits and rotates around Saturn. Cassini Confirms a Global Ocean on Saturn's Moon Enceladus 2015-09-16T04:00:00Z Apart from these gentle "librations", Mimas otherwise presents the same face to Saturn throughout its orbit. Death Star moon is 'wonky or watery' 2014-10-16T04:00:00Z Even lower-end librations saw payoffs on higher prices—drinkers paid 10 percent more for Popov vodka and 7 percent more for Gordon’s Gin—but didn’t seem to notice, with sales by volume remaining steady. Booze Prices Went Up, But Americans Were Too Drunk to Notice 2013-07-31T19:17:28Z Like our sister planet, the moon, he has his rhythmic moments of libration; he then reveals his other side, a profoundly human, emotional one. Unicorns 2012-03-14T02:00:26.677Z His last telescopic discovery—that of the moon’s diurnal and monthly librations—was made in 1637, only a few months before his eyes were for ever closed in hopeless blindness. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 4 "G" to "Gaskell, Elizabeth" 2011-08-24T02:00:20.690Z A perpetual balance of Europe presuppose a balance of the four remaining parts of the world, which one may, deducting small librations, promise our globe. Hesperus or Forty-Five Dog-Post-Days Vol. I. A Biography 2011-05-11T02:00:19.453Z The next year he made his last discovery, known as the moon's librations. Famous Men of Science 2011-03-08T03:00:49.717Z Cause of librations.—That the moon should librate is by no means so remarkable a fact as that it should at all times turn very nearly the same face toward the earth. A Text-Book of Astronomy 2011-01-05T03:00:57.347Z As the sterile moon hath her librations, so must he boast of his oscillations, thinking them eternal verities. Unicorns 2012-03-14T02:00:26.677Z The subject of the lunar librations was treated by Lagrange with great originality in an essay crowned by the Paris Lagrange. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 7 "Arundel, Thomas" to "Athens" The gibbous Earth hung high above the horizon, motionless, save for the invisible pendulum sway over the tiny arc, of its libration: widening to quadrature, casting upon the bleak naked Lunar landscape its mellow Earth-glow. Astounding Stories of Super-Science April 1930 The stifling heat, Luke learned, too, that every ninth day, with what they called the libration of Vulcan, there came an equal period of raw and biting cold to replace the heat. Vulcan's Workshop And Khalid’s distance from the orbit of this grand luminary seems to vary with his moods; and these vary with the librations and revolutions of the moon. The Book of Khalid One more astronomical discovery also he was to make—that of the moon's libration. Pioneers of Science The "librations," however, of Mercury are on a larger scale than those of the moon, because he travels in a more eccentric path. A Popular History of Astronomy During the Nineteenth Century Fourth Edition But it is only an insignificant margin of the far side of the moon which this libration permits us to examine. The Story of the Heavens This change or libration is of four different kinds, viz. the diurnal libration, the libration in longitude, the libration in latitude, and the spheroidal libration. The Martyrs of Science, or, The lives of Galileo, Tycho Brahe, and Kepler The inner slope of the E. wall is a fine object at sunrise, when libration is favourable. The Moon A Full Description and Map of its Principal Physical Features This diurnal or parallactic libration is really more effective than the other two in extending our vision into the space-facing hemisphere of the moon. Pioneers of Science I had undertaken, in conjunction with M. Bouvard, the observations relating to the verification of the laws of the moon's libration. Biographies of Distinguished Scientific Men You are, of course, aware that in consequence of her librations, or noddings, or wobblings, the Moon presents to the eyes of the Earth a little more than the exact half of her disc. All Around the Moon Galileo discovered the first of these kinds of libration, and appears to have had some knowledge of the second; but the third was discovered by Hevelius, and the fourth by Lagrange. The Martyrs of Science, or, The lives of Galileo, Tycho Brahe, and Kepler A remarkable ray-system, but one which is only well seen when libration is favourable. The Moon A Full Description and Map of its Principal Physical Features First comes a research into the libration of the moon. Pioneers of Science The memoir in which Lagrange has so successfully connected the laws of libration with the principles of gravitation, is no less remarkable for intrinsic excellence than style of execution. Biographies of Distinguished Scientific Men Fate, now come back; thou canst not farther get; The bounds of thy libration here are set. The works of John Dryden, now first collected in eighteen volumes. Volume 04 Inequalities, occasioned by sight variations in the revolution, give rise to fluctuations of from 6 degrees to 8 degrees, or to an apparent libration in longitude as well as in latitude. COSMOS: A Sketch of the Physical Description of the Universe, Vol. 1 At this phase, if libration is favourable, the manifold details of its very uneven and apparently convex floor are best seen. The Moon A Full Description and Map of its Principal Physical Features They dashed against the rocks, swirled in the crevices, rose like scarfs on the wind, fell back in drops and sprays, and with one long, sweeping libration, gathered their green waters together and retreated. Over Strand and Field The admirable memoir of Lagrange upon the libration of the moon seemed to have exhausted the subject. Biographies of Distinguished Scientific Men One-seventh of it is seen in those movements of libration Barbicane spoke of. The Moon-Voyage At no time did Browning write verse which soars with a more steadfast and impassioned libration of wing. Robert Browning Though a very distinct formation, it is difficult to see its details except under favourable conditions of libration. The Moon A Full Description and Map of its Principal Physical Features Her varying angular velocity, and consequent libration in longitude. Scientific American Supplement, No. 447, July 26, 1884 Only the youngest of travellers would use such a place as an observatory; and only the youngest of observers would have considered this libration of the stars an extraordinary phenomenon. To the Gold Coast for Gold A Personal Narrative in Two Volumes.—Volume I In 1853 he combined pairs of photographs of the moon in the same phase, but under different conditions regarding libration, showing the moon from slightly different points of view. History of Astronomy And lunar-like in their libration are some of his melodies—glimpses, mysterious and vast, as of a strange world. Chopin : the Man and His Music It is flanked E. and W. by other large enclosures, which can only be seen to advantage when libration is favourable. The Moon A Full Description and Map of its Principal Physical Features The inclination of her axis to the plane of her orbit, and her consequent libration in latitude. Scientific American Supplement, No. 447, July 26, 1884 The last of Galileo's great astronomical discoveries related to the libration of the moon. Great Astronomers Dr. Klein has frequently seen this rill with great distinctness, and at other times sought for it in vain; though on each occasion the conditions of illumination, libration, and definition were practically similar. The Moon A Full Description and Map of its Principal Physical Features The one on the left illustrates the manner in which the libration in longitude is made apparent. Scientific American Supplement, No. 447, July 26, 1884 The accompanying map, eighteen inches in diameter, represents the moon under mean libration. The Moon A Full Description and Map of its Principal Physical Features |
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