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In astrophysics, an event horizon is a boundary beyond which events cannot affect an outside observer. Wolfgang Rindler coined the term in the 1950s. [1]In 1784, John Michell proposed that gravity can be strong enough in the vicinity of massive compact objects that even light cannot escape. [2]
Although in most Spanish-speaking territories and regions, guttural or uvular realizations of /r/ are considered a speech defect, back variants for /r/ ([ʀ], [x] or [χ]) are widespread in rural Puerto Rican Spanish and in the dialect of Ponce, [31] whereas they are heavily stigmatized in the dialect of the capital San Juan. [32]
Within an apparent horizon, light does not move outward; this is in contrast with the event horizon. In a dynamical spacetime, there can be outgoing light rays exterior to an apparent horizon (but still interior to the event horizon). An apparent horizon is a local notion of the boundary of a black hole, whereas an event horizon is a global notion.
Hispanic is a term that refers to people of Spanish speaking origin or ancestry. Think language -- so if someone is from Spanish speaking origin or ancestry, they can be described as Hispanic. Latino?
Like black holes, white holes have properties such as mass, charge, and angular momentum.They attract matter like any other mass, but objects falling towards a white hole would never actually reach the white hole's event horizon (though in the case of the maximally extended Schwarzschild solution, discussed below, the white hole event horizon in the past becomes a black hole event horizon in ...
Below are select vocabulary differences between Spain and other Spanish-speaking countries. Words in bold are unique to Spain and not used in any other country (except for perhaps Equatorial Guinea which speaks a very closely related dialect, and to a lesser extent the Philippines).
In parts of Spain, it is considered proper Spanish for the letter "z" and the combos "ci" and "ce" to be pronounced as [θ] (as in English thin), with the exceptions of Galicia, Andalusia/Andalucía and the Canary Islands. In most of Spanish-speaking Spain, the pronunciation of surnames ending in the letter "z" sound similar to the English "th".
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