...The stronger act upon the weaker, and the colossal Jupiter alone causesmany of the perturbations in our great solar family... 
Camille Flammarion Frances A. Welby 「Astronomy for Amateurs」
...This led Euler to write a valuable essay disclosing a newmethod of computing perturbations, called the instantaneous ellipse withvariable elements...
George Forbes 「History of Astronomy」
...Meanwhile, one of the ablest French astronomers, Le Verrier, experienced incomputing perturbations, was independently at work, knowing nothing aboutAdams...
George Forbes 「History of Astronomy」
...Mathematicalastronomers have taken great interest in the perturbations of the satellites,because their relative periods introduce peculiar effects...
George Forbes 「History of Astronomy」
...Simon Newcomb was directed to the solution of this question, and he arrived at the conclusion that the planetary perturbations could not explain the actual situation of the asteroidal orbits...
Garrett Serviss 「Curiosities of the Sky」
...‘If this be really a ternary system,’wrote Sir John Herschel, ‘connected by the mutual attraction of itsparts, its perturbations will present one of the most intricate problemsin physical astronomy...
Thomas Orchard 「The Astronomy of Milton's 'Paradise Lost'」
...But since the existence of planetary perturbation has become recognised,questions arise of the gravest importance with reference to the possibleeffects which such perturbations may have...
Robert Stawell Ball 「The Story of the Heavens」
...It at onceremoves all fear as to the effect which perturbations can produce on thestability of the system...
Robert Stawell Ball 「The Story of the Heavens」
...Adams had shown how his theory rendered anexact account of the perturbations of Uranus in longitude...
Robert Stawell Ball 「The Story of the Heavens」
...In the meantime the attention of Le Verrier, the great Frenchmathematician and astronomer, had been specially directed by Arago tothe problem of the perturbations of Uranus...
Robert Stawell Ball 「The Story of the Heavens」
...Theinfluences of the older planets were estimated once more with everyprecision, but only to confirm the conclusion already arrived at as totheir inadequacy to account for the perturbations...
Robert Stawell Ball 「The Story of the Heavens」
...But the calculation of the perturbations of Encke's cometis so extremely intricate that Asten's result is not of great value...
Robert Stawell Ball 「The Story of the Heavens」
...The small mass of comets is also brought before us in a very strikingway when we recall what has been said in the last chapter on theimportant subject of the planetary perturbations...
Robert Stawell Ball 「The Story of the Heavens」
...The moon is attracted not only by the earth, but by the sun also;hence its orbit is perturbed, and Newton calculated out the chief ofthese perturbations, viz...
Oliver Lodge 「Pioneers of Science」
...Newtonbegan the theory of planetary perturbations...
Oliver Lodge 「Pioneers of Science」
...Take a single instance of the perturbations of Jupiter and Saturnwhich can be rendered evident...
Henry Warren 「Recreations in Astronomy」
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