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In most cases, a company described as "bigger" has a larger sphere of influence. For example, the software company Microsoft has a large sphere of influence in the market of operating systems; any entity wishing to sell a software product may weigh up compatibility with Microsoft's products as part of a marketing plan.
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 ...
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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]
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 ...
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 ...
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".
Academics have argued that in the praxis of hegemony, imperial dominance is established by means of cultural imperialism, whereby the leader state (hegemon) dictates the internal politics and the societal character of the subordinate states that constitute the hegemonic sphere of influence, either by an internal, sponsored government or by an ...