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Showing 21–34 of 34 items
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Sends a method of estimating the variations in the elements of orbits during the perturbations in longitude and distance. Used it in manuscript when examining Saturn and Jupiter.
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Wants to use method of indeterminate coefficients to integrate the differential equations of the planets' perturbations. [Originally written to W. Fairfax.]
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Needs advice on integrating equations. Praises JH's book [Prelim. Discourse]. Says James Mackintosh and [Henry] Hallam also praise it. Note from William Somerville, which needs a reply, is enclosed.
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Explains to MS P. S. Laplace's method of indeterminate coefficients in mathematics. Thanks MS for her praise of his book [Prelim. Discourse], which JH values more highly than newspaper reviews.
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Sends preliminary observations that will be prefixed to her book [Mechanism of the Heavens]. Wants JH to make any criticisms of it before it is published.
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Returns proofs and sends a few remarks concerning them. Discusses difficulty of measuring Eta Coronae. Anxious to see her [Mechanism of the Heavens]. Has another daughter [Isabella].