Referee report by G. B. Airy on 'Of Such Ellipsoids Consisting of Homogeneous Matter as are Capable of Having the Resultant of the Attraction of the Mass upon a Particle in the Surface, and a Centrifugal Force Caused by Revolving about One of the Axes, Made Perpendicular to the Surface' by J. Ivory

It contains nothing which has not been known many years: and might as well have been omitted. The fifth section contains the discussion of the equations as applied to the general case. A new substitution is made for the constant upon which the proportion of the three axes depends and which gives facilities for the examination of particular points. First it is shewn that there is an infinite number of forms for the ellipsoid (each requiring a peculiar velocity of rotation). Secondly, the limiting proportion of the axes is found; this occurs when the equatoreal axes are equal, each being = polar axis x 1.715. Thirdly it is shewn that if one equatoreal axis be smaller than this quantity, the other will be greater: and that when one is indefinitely near to equality with the polar axis, the other will be indefinitely great. Fourthly it is shewn, by an investigation conducted with great skill, that to any velocity of rotation there corresponds but one proportion of the axes and <u>vice versa<\u>: that for the limiting proportion above-mentioned there is a certain velocity, and that as the inequality of the equatoreal axes increases, the velocity of rotation must be diminished, till in the case of one axis infinitely long the velocity is 0. With this, Mr. Ivory’s investigation closes. The whole of this section is curious and valuable. From the statement above it appears that the paper is not to be considered as an original memoir so much
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Manuscript details
- Author
- James Ivory
- Reference
- RR/1/120
- Series
- RR
- Date
- 1838
- IIIF
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Referee report by G. B. Airy on 'Of Such Ellipsoids Consisting of Homogeneous Matter as are Capable of Having the Resultant of the Attraction of the Mass upon a Particle in the Surface, and a Centrifugal Force Caused by Revolving about One of the Axes, Made Perpendicular to the Surface' by J. Ivory, 1838. From The Royal Society, RR/1/120
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