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The family of Tibetan lunisolar calendars operates on a shared arithmetic axiom (67 lunar months = 65 solar months) that provides a rigid structure but causes observable seasonal drift. This study deconstructs the calendar through a…

Physics and Society · Physics 2026-04-07 Tsogtgerel Gantumur

Physical geometry studies mutual disposition of geometrical objects and points in space, or space-time, which is described by the distance function d, or by the world function \sigma =d^{2}/2. One suggests a new general method of the…

General Physics · Physics 2007-05-23 Yuri A. Rylov

Weinberg relation can be explained by Newton laws. It can also be transformed into a relation between a gravitational cross section area, associated to a gravitational mass m, and the product of two gravitational radii corresponding to the…

General Physics · Physics 2008-06-02 Antonio Alfonso-Faus

In the middle of the third millennium BC the Sumerians must have noticed that the reciprocal of the number 7,in contrast to the numbers 1,2,3,4,5,and 6,could not be expressed by a finite sexagesimal fraction but it recurred every three…

History and Overview · Mathematics 2014-07-24 Kazuo Muroi

A set of tiles for covering a surface is composed of two types of tiles. The base shape of each one of them is a diamond or rhombus, both with angles 60 and 120 degrees. They are distinguished by labeling one as an acute diamond with a base…

Metric Geometry · Mathematics 2015-03-11 Theo P. Schaad

It has recently been claimed that there is significant coherence between the spectral peaks of the global temperature series over the last 160 years and those of the speed of the solar center of mass at periods of 10-10.5, 20-21, 30 and…

Earth and Planetary Astrophysics · Physics 2014-04-24 Sverre Holm

We construct a duality between several simple physical systems by showing that they are different aspects of the same quantum theory. Examples include the free relativistic massless particle and the hydrogen atom in any number of…

High Energy Physics - Theory · Physics 2016-08-25 I. Bars , C. Deliduman , O. Andreev

Although the discovery of the chaotic motion of the inner planets in the solar system dates back to more than thirty years ago, the secular chaos of their orbits still dares more analytical analyses. Apart from the high-dimensional…

Earth and Planetary Astrophysics · Physics 2021-11-03 Federico Mogavero , Jacques Laskar

Why does the Sun have a radius around 696000~km? We will see in this article that dimensional arguments can be used to understand the size of the Sun and of a few other things along the way. These arguments are not new and can be found…

Soft Condensed Matter · Physics 2024-01-31 Marc-Antoine Fardin , Mathieu Hautefeuille

A simple mathematical model of the aging process for long-lived organisms is considered. The key point in this model is the assumption that the body does not have internal clocks that count out the chronological time at scales of decades.…

Other Quantitative Biology · Quantitative Biology 2019-12-30 Yu. N. Morokov

Zeno's paradoxes are explained as being the result of inappropriate combination of discrete and continuous mathematical systems. It is proposed that the source of this confusion lies in the course of development of the number system, which…

History and Overview · Mathematics 2014-11-19 Nathaniel L. Bushwick

The evolution of the solar activity comprises, apart from the well-known 11-year cycle, various temporal scales ranging from months up to the secondary cycles known as mid-term oscillations. Its nature deserves a physical explanation. In…

Solar and Stellar Astrophysics · Physics 2020-08-04 D. D. Sokoloff , A. S. Shibalova , V. N. Obridko , V. V. Pipin

The solar system has changed dramatically since its birth, and so did our understanding of it. A considerable research effort has been invested in the past decade in an attempt to reconstruct the solar system history, including the earliest…

Earth and Planetary Astrophysics · Physics 2015-07-17 D. Nesvorny , F. Roig

The new concept of a system of hex equations is introduced as an overdetermined system of six five-point face-centered quad equations defined on six vertices of a hexagon. For a consistent system of hex equations, two variables on…

Mathematical Physics · Physics 2022-05-06 Andrew P. Kels

The use of four Lagrange points of the Sun/Earth system for fundamental physics experiments in space is presented. L1, L2, L4 and L5 rotating rigidly together with the Earth form a natural reference frame at the scale of the inner solar…

General Relativity and Quantum Cosmology · Physics 2017-12-27 Angelo Tartaglia , Enrico Lorenzini , David Lucchesi , Giovanni Pucacco , Matteo Luca Ruggiero , Pavol Valko

It seems reasonable that a toroid can be thought of approximately as a solenoid bent into a circle. The correspondence of the inductances of these two objects gives an approximation for the natural logarithm in terms of the average of two…

Popular Physics · Physics 2015-03-13 Ibrahim Semiz

The solar cycle and its associated magnetic activity are the main drivers behind changes in the interplanetary environment and Earth's upper atmosphere (commonly referred to as space weather and climate). In recent years there has been an…

Solar and Stellar Astrophysics · Physics 2013-10-08 Andrés Muñoz-Jaramillo , Laura A. Balmaceda , Edward E. DeLuca

Assuming a suitable rotation of the Universe as a whole, we can attribute the rotation of galaxies to it. Using Lagrangian Mechanics we then can find the equations governing the rotation of a galaxy. We find in this way the azimuthal…

General Physics · Physics 2012-05-30 Evangelos Chaliasos

If one wants to translate the heliocentric picture of planets moving uniformly on circular orbits about the sun to the perspective of a terrestrial observer, using classical (ancient) geometric means only, one is naturally led to the…

History and Philosophy of Physics · Physics 2022-08-25 Erhard Scholz

The long-term stability of the Solar System is an issue of significant scientific and philosophical interest. The mechanism leading to instability is Mercury's eccentricity being pumped up so high that Mercury either collides with Venus or…

Earth and Planetary Astrophysics · Physics 2023-06-23 Dorian S. Abbot , David M. Hernandez , Sam Hadden , Robert J. Webber , Georgios P. Afentakis , Jonathan Weare