Black holes are regions of space where gravity is so strong that nothing, not even light, can escape. They can form when large stars collapse at the end of their life cycles, compressing their mass into a tiny space. Black holes warp spacetime so severely that they can pull objects inward and may potentially serve as portals to other universes or allow for time travel according to some theories. Scientists study black holes by observing the effects of their strong gravitational forces, such as emitting x-rays and warping of light.
This document discusses black holes and provides information on their structure, types, behavior, and formation. It describes how black holes have intense gravity that prevents even light from escaping once it passes the event horizon. The document also discusses famous black holes like Cygnus X-1 and Sagittarius A*, the supermassive black hole at the center of the Milky Way galaxy. Stephen Hawking's theory that black holes emit radiation and glow is also summarized.
Black holes are regions of space where gravity is so strong that nothing, not even light, can escape. They can form when large stars collapse at the end of their life cycles, compressing their mass into a tiny space. Black holes warp spacetime so severely that they can pull objects inward and may potentially serve as portals to other universes or allow for time travel according to some theories. Scientists study black holes by observing the effects of their strong gravitational forces, such as emitting x-rays and warping of light.
This document discusses black holes and provides information on their structure, types, behavior, and formation. It describes how black holes have intense gravity that prevents even light from escaping once it passes the event horizon. The document also discusses famous black holes like Cygnus X-1 and Sagittarius A*, the supermassive black hole at the center of the Milky Way galaxy. Stephen Hawking's theory that black holes emit radiation and glow is also summarized.
This document discusses black holes, including their definition, structure, theories of formation, methods of detection, and two specific black holes - Sagittarius A* and Cygnus X-1. It defines a black hole as a region with gravitational fields too strong for light or matter to escape, and describes their key structures like the singularity, event horizon, and accretion disk. It also outlines some theoretical explanations for black holes and how astronomers detect their effects through light deflection and influences on nearby objects.
This document discusses the history and properties of black holes. It explains that black holes were first proposed in the 18th century and describes how Einstein's general relativity theory led to the modern understanding of them. The key aspects covered include: the formation of black holes via gravitational collapse; the defining presence of an event horizon and singularity at the center; Hawking's prediction that black holes emit thermal radiation and eventually evaporate; and ongoing questions around merging black holes and resolving information paradoxes.
The document discusses black holes, including their definition, structure, properties, classifications, and how astronomers detect them. Black holes are very dense objects with gravity so strong that not even light can escape. They are categorized into stellar, supermassive, and primordial black holes. Astronomers find evidence for black holes' existence by observing their effects on nearby matter like heating dust that emits x-rays, or by measuring the mass of an unseen object that is gravitationally influencing a companion star. Black holes are theorized to exist at the centers of most galaxies.
Black holes are objects with such strong gravity that not even light can escape. They form when massive stars collapse at the end of their life cycles. Black holes come in different sizes, from stellar-mass black holes formed by collapsed stars to supermassive black holes millions of times the sun's mass found at the centers of galaxies. Though we cannot see a black hole directly, astronomers can detect them through their effects on nearby objects like gases and stars.
1) Black holes were first theorized in 1783 and were described by Einstein's theory of general relativity in 1916. The term "black hole" was coined in 1967.
2) Black holes are regions of space where gravity is so strong that not even light can escape. They form when massive stars collapse at the end of their life cycles.
3) There are three main types of black holes - stellar black holes resulting from collapsed stars, supermassive black holes at the centers of galaxies, and theoretical micro black holes. Black holes cannot be seen directly but their effects on nearby stars and gas provide evidence of their existence.
Black holes are formed when massive stars collapse in on themselves after exhausting their nuclear fuel. The collapsed star's immense gravity causes even light to be unable to escape, creating an event horizon around the black hole. There is strong evidence that supermassive black holes exist at the centers of galaxies, helping to shape their structure and hold stars in orbit. Black holes can continue growing by absorbing nearby matter and other objects that come too close and cross the event horizon.
Este currículum vitae resume la información personal, educación, habilidades, experiencia laboral y referencias de Joelyn Diamantina Sigüenza Beltrán, una mujer soltera de 25 años que vive en San Salvador y ha trabajado como display en dos empresas desde 2004.
This document discusses black holes, including their definition, structure, theories of formation, methods of detection, and two specific black holes - Sagittarius A* and Cygnus X-1. It defines a black hole as a region with gravitational fields too strong for light or matter to escape, and describes their key structures like the singularity, event horizon, and accretion disk. It also outlines some theoretical explanations for black holes and how astronomers detect their effects through light deflection and influences on nearby objects.
This document discusses the history and properties of black holes. It explains that black holes were first proposed in the 18th century and describes how Einstein's general relativity theory led to the modern understanding of them. The key aspects covered include: the formation of black holes via gravitational collapse; the defining presence of an event horizon and singularity at the center; Hawking's prediction that black holes emit thermal radiation and eventually evaporate; and ongoing questions around merging black holes and resolving information paradoxes.
The document discusses black holes, including their definition, structure, properties, classifications, and how astronomers detect them. Black holes are very dense objects with gravity so strong that not even light can escape. They are categorized into stellar, supermassive, and primordial black holes. Astronomers find evidence for black holes' existence by observing their effects on nearby matter like heating dust that emits x-rays, or by measuring the mass of an unseen object that is gravitationally influencing a companion star. Black holes are theorized to exist at the centers of most galaxies.
Black holes are objects with such strong gravity that not even light can escape. They form when massive stars collapse at the end of their life cycles. Black holes come in different sizes, from stellar-mass black holes formed by collapsed stars to supermassive black holes millions of times the sun's mass found at the centers of galaxies. Though we cannot see a black hole directly, astronomers can detect them through their effects on nearby objects like gases and stars.
1) Black holes were first theorized in 1783 and were described by Einstein's theory of general relativity in 1916. The term "black hole" was coined in 1967.
2) Black holes are regions of space where gravity is so strong that not even light can escape. They form when massive stars collapse at the end of their life cycles.
3) There are three main types of black holes - stellar black holes resulting from collapsed stars, supermassive black holes at the centers of galaxies, and theoretical micro black holes. Black holes cannot be seen directly but their effects on nearby stars and gas provide evidence of their existence.
Black holes are formed when massive stars collapse in on themselves after exhausting their nuclear fuel. The collapsed star's immense gravity causes even light to be unable to escape, creating an event horizon around the black hole. There is strong evidence that supermassive black holes exist at the centers of galaxies, helping to shape their structure and hold stars in orbit. Black holes can continue growing by absorbing nearby matter and other objects that come too close and cross the event horizon.
Este currículum vitae resume la información personal, educación, habilidades, experiencia laboral y referencias de Joelyn Diamantina Sigüenza Beltrán, una mujer soltera de 25 años que vive en San Salvador y ha trabajado como display en dos empresas desde 2004.
Este documento resume la evolución de la educación infantil en España y Europa. La escolarización de niños menores de 3 años en España ha aumentado considerablemente en los últimos años, situándose entre los países de la UE con las tasas más altas. La UE prevé una tasa del 95% para 2020. En Castilla-La Mancha, la tasa de abandono escolar es alta, pero planes recientes buscan reducirla en un 15% para 2020.
Hoy en día, nos separamos "Negro Horizon", un documento que explica con seis preguntas y respuestas seis lo que realmente está ocurriendo en Louisiana, después de la explosión de la plataforma en aguas profundas Horizon. La claridad en las muchas falsedades que se propagan en los últimos días.
3. La BP affitta la Deepwater Horizon dalla Svizzera Transocean , la più grande compagnia al mondo nel settore delle trivellazioni off-shore
4. La piattaforma La Deepwater Horizon è stata realizzata sulla base di Deepwater Nautilis, meno evoluta perché incapace di operare in posizionamento dinamico . Questo è un requisito fondamentale a causa delle acque burrascose del Golfo del Messico
5. TUTTI I NUMERI 8000 barili estratti ogni g iorno grande come due campi da calcio il pozzo di idrocarburi più profondo al mondo a circa 80 km dalla costa della Louisiana può ospitare circa 130 persone 9100 m = profondità della trivella
9. Le coste colpite dal disastro Questa immagine è stata pubblicata il 1 maggio 2010 ,quando ormai la Marea Nera minacciava seriamente le coste. La chiazza è grande come l’isola di Giamaica .
11. Mettiamoli a confronto Lo SLOGAN originale della compagnia petrolifera “ Beyond Petroleum” (“Al di là del petrolio”, oppure “Non solo petrolio")
34. Mille barili di petrolio in mare? FALSO! 1. Inizialmente la BP ha tentato di nascondere l’entità del disastro all’opinione pubblica stimando una perdita di 1000 barili al giorno. 2 . Stima in maggio NOAA:5000 barili al giorno 4. Tra i media: - Wall Street Journal: 25000 barili al giorno - la stessa BP: 150000 barili al giorno 3. 5 maggio: molti scienziati sostengono 50000 e alcuni 70000 al giorno All’inizio la BP ha nascosto la verità
35.
36.
37. I disperdenti I disperdenti (tra cui il Corexit , il butossietanolo)sono utilizzati per disperdere gli idrocarburi in parti più piccole, legarli chimicamente e farli precipitare sul fondale ad oltre 1600 m di profondità. In questo modo non dovrebbero costituire pericolo per uomo e navi. Corexit 9500 : quattro volte più tossico del petrolio, non è tra i dieci primi più efficaci , è proibito in Europa e causa infertilità e malformazione dei feti. La NALCO ne è produttrice
38. Impatto sulla salute A breve e medio termine Esacerbazione di malattie respiratorie e patologie alla pelle. Le contaminazioni avvenute per via inalatoria. Aumento dell’incidenza di tumori, aborti spontanei, anomalie dei neonati. Le contaminazioni avvenute per via orale. A lungo termine
49. La BP in Pakistan Dopo il terremoto del 2005 proprio la BP ha impegnato un milione di dollari , a cui si sono aggiunte le donazioni dei dipendenti, per sostenere gli sforzi del Paese. Ora in Pakistan BP si concentra principalmente sulle attività di esplorazione nella provincia del Sindh . Ancora oggi aiuta la popolazione locale sostenendo progetti per sanità, istruzione e sviluppo delle infrastrutture.
50. Negli USA il livello d’interesse della popolazione per il fenomeno ha raggiunto il picco nel giugno 2010, ma successivamente è andato calando. Il grafico mostra la frequenza a siti associati alla parola chiave British Petroleum BP. (fonte:Google statistica)