The reason for this peculiarity is to be found in theellipticity of her globe.
This necessitated the retention of cycles and epicycles, which gave rise to much confusion; nor was it until Kepler made his great discovery of the ellipticity of the planetary orbits that they were eliminated from the system.
It is no doubt to this high velocity of rotation that we must ascribe the extraordinary ellipticity of Jupiter; the rapid rotation causes a great centrifugal force, and this bulges out the pliant materials of which he seems to be formed.
We can even calculate the degree of ellipticity which this surmise would require, and we find that it coincides with the observed ellipticity.
The ellipticity of Jupiter indicated by these figures is sufficiently marked to be obvious without any refined measures.
The ellipticity of its companions was determined by Pickering and Douglass; indeed, that of No.
The lunar inequalities (perturbation in the moon's latitude and longitude) give according to the last investigations of Laplace, almost the same result for the ellipticity as the measurements of degrees, viz.
The specific difference in the new family, denoted in the general sketch by b, is this ellipticity of the equator.
The specific difference a of this family must be regarded as the excess of the ellipticity of this figure above that of all the earlier ones, beginning with the slightly flattened planetary spheroid.
This improbability is based on the ellipticity of the moon's orbit, which is caused by the attraction of the sun.
The calculation of the Russian section gives, with an assumed ellipticity of 1/299.
In this investigation, the square and higher powers of the ellipticity are neglected; the solution was completed by F.
In the ancient astronomy the ellipses in which it is now known that the planets revolve around the sun could not be distinguished from circles, but the unequal angular motion due to ellipticity was observed.
Its two diameters are to one another as 17 is to 16; the ellipticity of its disk is manifest to simple inspection.
The first true perturbation is what Ptolemy called "the evection," the principal part of which is a periodic change in the ellipticity or excentricity of the moon's orbit, owing to the pull of the sun.
Professor Hennessey observes in connection with this phenomenon, that a very small change of ellipticity would suffice to lay bare or submerge extensive tracts of the globe.
The moon may therefore, by the observation of its movements, render appreciable to the higher departments of astronomy the ellipticity of the earth, as it taught the early astronomers the rotundity of our earth by means of its eclipses.
This ratio involves what we might call, in a general way, the solid ellipticity of the earth, or the ellipticity of a homogeneous spheroid having the same moments of inertia as the earth.
The extensive sets of observations of gravity provided the basis of calculations of the ellipticity of the earth.
Then Clairaut, from the assumption that the earth is a spheroid of equilibrium, derived a theorem from which the ellipticity of the earth can be derived from values of the intensity of gravity.
It follows from Clairaut's theorem that if the earth is an oblate spheroid, its ellipticity can be determined from relative values of gravity and the absolute value at the equator involved in c.
He calculated the ellipticity of the earth to be 1/(291.
In consequence of the ellipticity of the earth, and of the difference in the direction of the two forces, the intensity of gravitation varies according to the different latitudes.
With respect to Huyghens, he appears to have formed a conjecture respecting the spheroidal figure of the earth independently of Newton; but his method for computing the ellipticity is founded upon that given in the Principia.
Many of the asteroids have very eccentric orbits, and their orbits are curiously intermixed, varying widely among themselves, both in ellipticity and in inclination to the common plane of the solar system.
Owing to the great ellipticity of Jupiter, growing out of his rapid rotation, the influence of this ellipticity upon the motions of the five inner satellites is much greater than that of the sun, or of the satellites on each other.
Theoretical ellipticity from motion of 900" in the pericentreof Sat.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "ellipticity" in a variety of sentences. We hope that you will now be able to make sentences using this word.
