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- Penrose_process abstract "The Penrose process (also called Penrose mechanism) is a process theorised by Roger Penrose wherein energy can be extracted from a rotating black hole. That extraction is made possible because the rotational energy of the black hole is located, not inside the event horizon of the black hole, but on the outside of it in a region of the Kerr spacetime called the ergosphere, a region in which a particle is necessarily propelled in locomotive concurrence with the rotating spacetime. All objects in the ergosphere become dragged by a rotating spacetime. In the process, a lump of matter enters into the ergosphere of the black hole, and once it enters the ergosphere, it is split into two. The momentum of the two pieces of matter can be arranged so that one piece escapes to infinity, whilst the other falls past the outer event horizon into the hole. The escaping piece of matter can possibly have greater mass-energy than the original infalling piece of matter, whereas the infalling piece has negative mass-energy. In summary, the process results in a decrease in the angular momentum of the black hole, and that reduction corresponds to a transference of energy whereby the momentum lost is converted to energy extracted.The process obeys the laws of black hole mechanics. A consequence of these laws is that if the process is performed repeatedly, the black hole can eventually lose all of its angular momentum, becoming non-rotating, i.e. a Schwarzschild black hole. Demetrios Christodoulou calculated an upper bound for the amount of energy that can be extracted by the Penrose process.The maximal energy that can be extracted corresponds to 29% of the initial black hole mass.".
- Penrose_process wikiPageExternalLink 85-100.pdf.
- Penrose_process wikiPageID "2975616".
- Penrose_process wikiPageRevisionID "602695576".
- Penrose_process hasPhotoCollection Penrose_process.
- Penrose_process subject Category:Black_holes.
- Penrose_process type BlackHole109223177.
- Penrose_process type BlackHoles.
- Penrose_process type Location100027167.
- Penrose_process type Object100002684.
- Penrose_process type PhysicalEntity100001930.
- Penrose_process type Region108630039.
- Penrose_process type YagoGeoEntity.
- Penrose_process type YagoLegalActorGeo.
- Penrose_process type YagoPermanentlyLocatedEntity.
- Penrose_process comment "The Penrose process (also called Penrose mechanism) is a process theorised by Roger Penrose wherein energy can be extracted from a rotating black hole. That extraction is made possible because the rotational energy of the black hole is located, not inside the event horizon of the black hole, but on the outside of it in a region of the Kerr spacetime called the ergosphere, a region in which a particle is necessarily propelled in locomotive concurrence with the rotating spacetime.".
- Penrose_process label "Penrose process".
- Penrose_process label "Penrose-Prozess".
- Penrose_process label "Proceso Penrose".
- Penrose_process label "Processo Penrose".
- Penrose_process label "Processo Penrose".
- Penrose_process label "Processus de Penrose".
- Penrose_process label "ペンローズ過程".
- Penrose_process label "潘羅斯過程".
- Penrose_process sameAs Penrose-Prozess.
- Penrose_process sameAs Proceso_Penrose.
- Penrose_process sameAs Processus_de_Penrose.
- Penrose_process sameAs Processo_Penrose.
- Penrose_process sameAs ペンローズ過程.
- Penrose_process sameAs Processo_Penrose.
- Penrose_process sameAs m.08h4z0.
- Penrose_process sameAs Q616172.
- Penrose_process sameAs Q616172.
- Penrose_process sameAs Penrose_process.
- Penrose_process wasDerivedFrom Penrose_process?oldid=602695576.
- Penrose_process isPrimaryTopicOf Penrose_process.