Black Holes And The Black Hole Video
What Happens Inside A Black Hole? - with Jerome GauntlettWhat: Black Holes And The Black Hole
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| How Gentrification Can Be A Scary Thing | The created black hole is so dense that no light will be able to resist the gravitational pull. The size of a hole can be determined from the size and mass of the collapsed star. If any object were to fall into the event horizon, which is the boundary of the black hole, they would be sucked in forever. Loosely speaking, a black hole is a region of space that has so much mass concentrated in it that there is no way for a nearby object to escape its gravitational pull. Since our best theory of gravity at the moment is Einstein's general theory of relativity, we have to delve into some results of this theory to understand black holes in detail. The researchers found that the 'special particle' can exist around a pair of black holes just like how an electron exists around a pair of hydrogen atoms. To understand the science behind the special particle one needs to recollect their knowledge of the structure of an atom, which can be compared to the atmosphere of a black hole. |
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| Black Holes And The Black Hole | Black holes can come in a range of sizes, but there are three main types of black holes. The black hole's mass and size determine what kind it is. The smallest ones are known as primordial black holes. Scientists believe this type of black hole is as small as a single atom but with the mass of a large mountain. The most common type of medium. Black holes, light speed travel, and the center of the universe! Watch Numberphile discuss a "Googol": amazonia.fiocruz.br LINKS: All music by Jake Chudnow. Loosely speaking, a black hole is a region of space that has so much mass concentrated in it that there is no way for a nearby object to escape its gravitational pull. Since our best theory of gravity at the moment is Einstein's general theory of relativity, we have to delve into some results of this theory to understand black holes in detail. |
Black Holes And The Black Hole.
In physicsblack hole thermodynamics [1] is the area of study that seeks to reconcile the laws of thermodynamics with the existence of black-hole event horizons. As the study of the statistical mechanics of black-body radiation Hoes to the advent of the theory of quantum mechanicsthe effort to understand the statistical mechanics of black holes has had a deep impact upon the understanding of quantum gravityleading to the formulation of the holographic principle. The second law of thermodynamics requires that black holes have entropy.
If black holes carried no entropy, it would be possible to violate the second law by throwing mass into the black hole.
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The increase of the entropy of the black hole more than compensates for the decrease of the entropy carried by the object that was swallowed. InJacob Tje conjectured that black holes should have an entropy, [3] where by the same year, he proposed no hair theorems. The next year, inHawking showed that black holes emit thermal Hawking radiation [4] [5] corresponding to a certain temperature Hawking temperature. This is often referred to as the Bekenstein—Hawking formula.
Ploughing the field
The subscript BH either stands for "black hole" or "Bekenstein—Hawking". The fact that the black-hole entropy is also the maximal entropy that can be obtained by the Bekenstein bound wherein the Bekenstein bound becomes an equality was the main observation that led to the holographic principle. Although Hawking's calculations gave further thermodynamic evidence for black-hole entropy, until no one was able to make a controlled calculation of black-hole entropy based on statistical mechanicswhich associates entropy with a large number of microstates.
In fact, so called " no-hair " theorems [11] appeared to suggest that black holes could have only a single microstate. The situation changed in when Andrew Strominger and Cumrun Vafa calculated [12] the Blacj Bekenstein—Hawking entropy of a supersymmetric black hole in string theoryusing methods based on D-branes and string duality. Their calculation was followed by many similar computations of entropy of large classes of other extremal and near-extremal black holesand the result always agreed with the Bekenstein—Hawking formula.
However, for the Schwarzschild black holeviewed as the most far-from-extremal black hole, the relationship between micro- and macrostates has not been characterized.]
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