Randomness and Determinism : Why Are the Planetary Orbits Elliptical ?
نویسنده
چکیده
Kepler attempted to prove Divine design in the system of the world but actually had to attribute the eccentricities of the planetary orbits to randomness. Kant and even Laplace supported Kepler’s conclusion although Newton had proved that the eccentricities depended on the velocities of planetary motion. However, the velocities themselves are random; the system of the world does not exclude randomness.
منابع مشابه
Exponential law as a more compatible model to describe orbits of planetary systems
According to the Titus-Bode law, orbits of planets in the solar system obey a geometric progression. Many investigations have been launched to improve this law. In this paper, we apply square and exponential models to planets of solar system, moons of planets, and some extra solar systems, and compare them with each other.
متن کاملA simple recipe for estimating masses of elliptical galaxies and clusters of galaxies
We discuss a simple and robust procedure to evaluate the mass/circular velocity of massive elliptical galaxies and clusters of galaxies. It relies only on the surface density and the projected velocity dispersion profiles of tracer particles and therefore can be applied even in case of poor or noisy observational data. Stars, globular clusters or planetary nebulae can be used as tracers for mas...
متن کاملRevisiting elliptical satellite orbits to enhance the O3b constellation
Highly elliptical orbits can be used to provide targeted satellite coverage of locations at high latitudes. We review the history of use of these orbits for communication. How elliptical orbits can be used for broadband communication is outlined. We propose an addition of known elliptical orbits to the new equatorial O3b satellite constellation, extending O3b to cover high latitudes and the Ear...
متن کاملDeparture from Axisymmetry in Planetary Nebulae
Many planetary nebulae (PNe) exhibit symmetries which range from unremarkable spherical and elliptical shapes, to quite exotic bipolar and point-symmetric shapes. However, there are many which exhibit distinctly non-axisymmetric structure in either (i) the shape of the nebula, or (ii) in the off-centered position of the illuminating star. By examining a large number of well resolved images of P...
متن کاملLecture notes for 12.009, Theoretical Environmental Analysis
1 Natural climate change: glacial cycles 1 1.1 Climatic cycles . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.2 Milankovitch hypothesis: an introduction . . . . . . . . . . . . 4 1.2.1 Precession, obliquity, and eccentricity . . . . . . . . . . 5 1.2.2 Insolation . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.3 Precession and obliquity . . . . . . . . . . . . . . . . . . . . . 8...
متن کامل