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- DictionaryE·vent ho·ri·zon/əˈvent/
noun
- 1. a theoretical boundary around a black hole beyond which no light or other radiation can escape.
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In astrophysics, an event horizon is a boundary beyond which events cannot affect an observer. Wolfgang Rindler coined the term in the 1950s. In 1784, John Michell proposed that gravity can be strong enough in the vicinity of massive compact objects that even light cannot escape.
Mar 3, 2023 · The event horizon is the spherical outer boundary of a black hole loosely considered to be its "surface." It is the point, according to NASA, that the gravitational...
Jul 12, 2024 · Event horizon, boundary marking the limits of a black hole. At the event horizon, the escape velocity is equal to the speed of light. Since general relativity states that nothing can travel faster than the speed of light, nothing inside the event horizon can ever escape beyond it, including light.
Sep 8, 2020 · A black hole is an astronomical object with a gravitational pull so strong that nothing, not even light, can escape it. A black hole’s “surface,” called its event horizon, defines the boundary where the velocity needed to escape exceeds the speed of light, which is the speed limit of the cosmos.
May 31, 2024 · The meaning of EVENT HORIZON is the surface of a black hole : the boundary of a black hole beyond which nothing can escape from within it.
Apr 30, 2024 · An event horizon is a boundary in spacetime beyond which events cannot affect an observer. It is most commonly associated with black holes, where the gravitational pull is so strong that not even light can escape.
Oct 13, 2009 · What is an Event Horizon? The event horizon of a black hole is the boundary (‘horizon’) between its ‘outside’ and its ‘inside’; those outside cannot know anything about things (‘events’) which...
Sep 24, 2023 · The Event Horizon is a cosmic boundary that marks the point of no return for anything that enters a black hole. It plays a crucial role in our understanding of black holes and their properties. The gravitational pull beyond the Event Horizon is so strong that nothing, not even light, can escape.
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May 23, 2018 · An event horizon, as defined within general relativity, is a boundary in spacetime (the four-dimensional structure of the universe, with three-dimensional space and one-dimensional time) in which events are not realized by an observer so cannot affect the observer.
The ‘event horizon’ is the boundary defining the region of space around a black hole from which nothing (not even light) can escape. In other words, the escape velocity for an object within the event horizon exceeds the speed of light .
