Mathematical Tracts on Physical Astronomy, the Figure of the Earth: Precession and Nutation, and the Calculus of Variations - Gyan Books
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Mathematical Tracts on Physical Astronomy, the Figure of the Earth: Precession and Nutation, and the Calculus of Variations - Gyan Books
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Mathematical Tracts on Physical Astronomy, the Figure of the Earth: Precession and Nutation, and the Calculus of Variations - Gyan Books
About The Book: Mathematical Tracts on Physical Astronomy: The Figure of the Earth, Precession and Nutation, and the Calculus of Variations by George Biddell Airy, Sir George Biddell Airy’s 1828 tract series combines celestial mechanics, Earth’s shape, axial motions, and optimization methods. He analyzes Earth's oblate spheroid figure under gravity and rotational forces, then derives how gravitational torques from the Sun and Moon cause precession (a slow 26,000‑year conical wobble) and nutation (a smaller 18.6‑year “nodding” oscillation) of the Earth's spin axis. The work also introduces foundational principles of the calculus of variations, using the Euler–Lagrange method to optimize integrals and solve physical problems. Intended for university students, it unifies rigorous mathematics with astronomical applications."George Biddell Airy", "Motions of the Earth - PSC Exams", "Calculus of variations"
Author: George Biddell Airy
Pages: 184
Edition: 1826
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