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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 corporate terms, the sphere of influence of a business, organization, or group can show its power and influence in the decisions of other businesses/organizations/groups. The influence shows in several ways, such as in size, frequency of visits, etc. In most cases, a company described as "bigger" has a larger sphere of influence.
The radius of the sphere of influence is called the "(gravitational) influence radius". There are two definitions in common use for the radius of the sphere of influence. The first [ 1 ] is given by r h = G M BH σ 2 {\displaystyle r_{h}={\frac {GM_{\text{BH}}}{\sigma ^{2}}}} where M BH is the mass of the black hole, σ is the stellar velocity ...
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Sphere of influence (black hole), a region around a black hole in which the gravitation of the black hole dominates that of the host bulge; Sphere of influence, an area or region over which a state or organization has significant cultural, economic, military or political influence; Sphere of influence is also a legal term in family law. A child ...
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]
Beyond these contemporary parts of Japan's sphere of influence it also envisaged the conquest of a vast range of territories covering virtually all of East Asia, the Pacific Ocean, and even sizable portions of the Western Hemisphere, including in locations as far removed from Japan as South America and the eastern Caribbean.
The Anglosphere is the Anglo-American sphere of influence. [ a ] The term was first coined by the science fiction writer Neal Stephenson in his book The Diamond Age , published in 1995. John Lloyd adopted the term in 2000 and defined it as including English-speaking countries like the United Kingdom, the United States, Canada, Australia, New ...