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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 a boundary that marks the outer edge of black holes. It is the point at which nothing, not even light, can escape.
5 days ago · The event horizon is the boundary of a black hole where the escape velocity equals the speed of light. Nothing can escape or be observed from inside the event horizon, and it is not a material surface but a mathematical demarcation.
- The Editors of Encyclopaedia Britannica
Sep 8, 2020 · A black hole is an object with a gravitational pull so strong that nothing can escape it. Its event horizon is the boundary where the speed of light is exceeded. Learn about stellar-mass, supermassive and intermediate-mass black holes, and how they are observed.
The event horizon is the boundary around a black hole where the speed of light is exceeded and nothing can escape. Learn how the event horizon affects the appearance and behavior of black holes, such as the accretion disk, the shadow, the jets, and the singularity.
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. Learn how event horizons are formed, what happens at them, and how they are studied.
May 31, 2024 · Learn the meaning of event horizon, the surface of a black hole beyond which nothing can escape. See how the word is used in sentences and related articles from various sources.
