n-Body Problem Closed-Form Solution
The n-Body Problem Closed-form Solution monograph (is a freebie ebook), now the 4th Edition, is the principal pdf file below and its thrust is the presentation of the generalization of NEWTON's Law of Universal Gravitation -- in the form of an easy to use algorithm for calculating the gravitational interacting forces for any number of isolated bodies.
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Added to the principal Monograph, 2nd Edition, was the "Planet Forces" section, which refers to LIBESKIND's work.
One suggestion in this principal Monograph is the electromagnetic energy flux issuing from the atomic nuclei is a cause of gravity. The flux, however weak, doesn't stop at the valence electron, but travels on effecting other atom's electrons, is gravity.
Premise: a mechanism of gravity is assumed to be the result of van der WAALS like forces. That is, all the Earth's atom's nuclei radiate electromagnetic energy – is the energy which holds their electrons in orbit, including the outer-most valance electrons. These nuclei forces don't stop at the valance electrons, but continue weakly, spreading on outward like van der WAALS forces. This gives rise to gravity. Hence it is assumed Earth's mechanism of gravity is via the resulting manifestation of all Earth's nuclei's attractive, diffused electromagnetic flux, by-passing forces, which gives rise to gravity.
As a result, Earth's smeared gravitational field pulls on all the electrons attached to all the nuclei of every body equally, regardless of mass, weight, shape, etc.; so (Galileo's Law) all bodies are pulled down to Earth equally at the same rate. Experimental evidence via ROTHEN's experiments, coupled with the observations of van der WAALS' forces, does provide more than a sufficient reason for the above conjecture; i.e., for the mechanism of gravity. See: the n-Body Problem Closed-form Solution for further discussion below. It's algorithm may be used to determine those gravitational interaction forces.
Astronomy, Parts 1, 2, 3, and 4 is a single monograph (divided up into four Sections), mainly serving as technical background, with some historical background given too, to augment the n-body Problem ebook. It has been completely rewritten and now identified as the 2nd Edition (now 4th). Astronomy, Part 1 and 2, consists of a collection of essays about the Antikythera astronomy machine, Greek astronomy, Aristotle's Physics, Islamic astronomy, Copernicus, Galileo, Bacon versus Descartes, NEWTON, celestial mechanics, and more. Specifically, in the Second section of Part 1 it explains how the Sun's wobble creates, by gravitational forces, a planetoid's translation acceleration. And further, it hypothesized in this same section that the Sun's powerful Eddy currents are responsible for effecting the Sun's electromagnetic nodal rings, the gravitational force field (potential) wells encircling the Sun the planets and planetoid are embedded (trapped) in, which, when combined with the Sun's forces of these nodal ring gravitational wells, the planets and planetoids natural gravitational forces and their centrifugal forces, cause orbital stability to be maintained for all the orbiting bodies orbiting the Sun. This phenomenological scenario is described step-by-step in much more detail in the Second section of Part 1. More astronomical history, followed by more celestial mechanics, is presented in Part 2.
See Part 3 and 4 Prefaces for their contents. These Parts contains considerably more technical papers then Parts 1 and 2. For example, Part 4 contains WOODARD's paper on calculating orbits; and gives the essential pages from the book, Astronomical Paper..., Vol. XII, Coordinates of the Five Outer Planets, 1653-2060 (and the book's equations for the coordinates too).
On this day, 1/21/2019, added HERGET's Computation of Orbits out-of-print textbook; Part I, Chapters 1 through 5; and Part II (a separate document), Chapters 6 through 8; plus some more references (contained in the Main References section).
All pdf files are free to download for private use. Also, free compilers and interpreters for miscellaneous programming languages are available at https://www.thefreecountry.com/compilers/miscellaneous.shtml , which can be used to RUN the included computer programs in The n-body Problem.
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Added an extract, 10/06/2021, from Report from Iron Mountain on the Possibility and Desirability of Peace , by Leonard C. LEWIS, is a political satire; will be completed shortly. Also added is a page on "Shear Flow." Currently adding A Principia Mathematica free ebook, see below.