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Spheres of influence in Chinese empire in early 20th century The Russian government militarily occupied their zone, imposed their law and schools, seized mining and logging privileges, settled their citizens, and even established their municipal administration on several cities, [ 17 ] the latter without Chinese consent.
Musica universalis—which had existed as a metaphysical concept since the time of the Greeks—was often taught in quadrivium, [8] and this intriguing connection between music and astronomy stimulated the imagination of Johannes Kepler as he devoted much of his time after publishing the Mysterium Cosmographicum (Mystery of the Cosmos), looking over tables and trying to fit the data to what he ...
A sphere of influence (SOI) in astrodynamics and astronomy is the oblate spheroid-shaped region where a particular celestial body exerts the main gravitational influence on an orbiting object. This is usually used to describe the areas in the Solar System where planets dominate the orbits of surrounding objects such as moons , despite the ...
In neo-Calvinism, sphere sovereignty (Dutch: soevereiniteit in eigen kring), also known as differentiated responsibility, is the concept that each sphere (or sector) of life has its own distinct responsibilities and authority or competence, and stands equal to other spheres of life. Sphere sovereignty involves the idea of an all-encompassing ...
Much effort in academic and popular writing is devoted to deciding which countries have the status of "power", and how this can be measured. If a country has "power" (as influence) in military, diplomatic, cultural, and economic spheres, it might be called a "power" (as status).
The city-state of Athens exerted control over the Delian league through an informal empire in the 5th century BCE. [1] According to historian Jeremy Black, the role of chartered companies such as the Muscovy Company, the Levant Company, the East India Company and the Hudson's Bay Company, who operated beyond official state channels, were a forerunner to the concept of "informal empire".
In Greek antiquity the ideas of celestial spheres and rings first appeared in the cosmology of Anaximander in the early 6th century BC. [7] In his cosmology both the Sun and Moon are circular open vents in tubular rings of fire enclosed in tubes of condensed air; these rings constitute the rims of rotating chariot-like wheels pivoting on the Earth at their centre.
The Hill sphere is a common model for the calculation of a gravitational sphere of influence. It is the most commonly used model to calculate the spatial extent of gravitational influence of an astronomical body (m) in which it dominates over the gravitational influence of other bodies, particularly a primary (M). [1]