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, by thinking about gravity under fairly simple Jul 17, · Almost from the beginning of astronomical observations of galactic bodies in the universe, it has always been thought that "the more massive the bulge, the more massive the black hole" which has led scientists and astronomers to reason that "somehow the formation and growth of galaxy bulges and their central black holes are intimately connected." Apr 30, · Black Hole Essay A black hole is an object with such a strong gravitational field that even light cannot escape from its surface. A black hole may be formed when a massive object (very big object) undergoes uncontrolled contraction (a collapse) because of the inward pull of its own gravity
Free Black Holes Essays and Papers | Help Me
Black hole in astronomy is a theoretical region in space with such intense gravitational forces that nothing, not even light, can escape from it.
For the sun to form a black hole, it would have to be blackhole essay into a sphere less than 4 miles 6, blackhole essay. Scientists believe such concentrations of matter can occur under certain conditions, as when a massive star one with a mass three or more times that of the sun runs out of fuel for thermonuclear reactions and collapses in one itself. In blackhole essay constellation Cygnus, a star has been discovered that appears be in a binary two-star system with a small, invisible object that may be a black hole formed from a star Abell, The area around the object is a strong source of X-rays, possibly produced by gases heated to very high temperatures as they are drawn into the black hole.
Order custom essay Black Hole with free plagiarism report, blackhole essay. Very massive black holes may form at the centre of a galaxy, where there is a high concentration of stars and other matter. Astronomers have found evidence for the existence of massive black holes at the centre of several galaxies, including the Milky Way. Black holes ranging down to microscopic size may have formed when the universe blackhole essay very dense, shortly after blackhole essay creation.
According to a theory by the English physicist Stephen Hawking, black holes of very small size lose a significant amount of mass through subatomic processes at their boundaries. According to blackhole essay theory, once a black hole become extremely small, it emits all its remaining mass in an explosion of high-energy particles, blackhole essay.
However, evidence for such explosions has not been found. Today, there is ample evidence that black hole exist Snow If the core contains more than 3 solar masses, its collapse leads to the formation of a black hole.
In this case, the degenerate neutron gas pressure cannot halt the collapse. There may or may not be a supernova explosion, depending on whether a neutron star forms temporarily causing a rebound of the infalling outer layers of the star before collapsing further. A black hole never stops collapsing; mathematically, it can be described as a single point containing all the mass blackhole essay the collapsed stellar core, but physically it is difficult to describe.
In other words, if a star more than 2 or 3 solar masses in its core collapses, it will exceed the mass limit for formation of a neutron star. When a star collapses beyond the point where neutron blackhole essay pressure degenerate can support it, the collapse never stops as mentioned earlier.
Thus, a black hole is not in hydrostatic equilibrium because there is no known force that can counteract the inward force of gravity and it is said that the mass of the star forms a singularity, described mathematically as a single point having infinite density.
As the collapse proceeds, blackhole essay, the surface gravity of the star becomes stronger Chaisson, The gravitational force of the star remains the same at distance outside of the original surface of the star; the immense increase in gravity occurs only at closer distances. As the surface gravity increases, blackhole essay, it has an increasingly significant effect on photons of light, blackhole essay.
Eventually a point is reached where the surface gravity is so great that light cannot escape. At this blackhole essay, the star is said to have passed through the event horizon because it is impossible to observe anything that happens to it after this.
The radius of the star at this point is called the Schwarzschild radius and the Schwarzschild radius is proportional to the mass of the star; for a star of 1 solar mass, it is 3 km, blackhole essay. A black hole cannot be directly observed, but its presence may be detected through its gravitational effects.
If a binary system is found to have an unseen member whose mass is too great to be neutron star, then it must be a black hole. Such binary systems are most easily recognized if mass transfer takes place from the companion star to the black hole. In this case, the matter that is transferred forms an accretion disk so hot that it emits X-rays Abell, Thus, blackhole essay, X-ray binaries are likely places to look for black holes. Several X-ray binaries have been observed in which the analysis of the orbit of the visible star indicates that the unseen companion has too much mass to be a neutron star and must therefore be a black hole.
Reference: 1. Abell, G. Exploration of the Universe 96h editionpp. Philadelphia: W. Suanders Co. Chaisson, E. Astronomy Today. Englewood Cliffs, N, blackhole essay. Snow, T. The Dynamic Universe: An Introduction to Astronomy 6th editionblackhole essay, p. Paul: West Publishing Co, blackhole essay. This essay blackhole essay written by a fellow student. You can use it as an example when writing your own essay or use it as a source, but you need cite it.
Explore how the human body blackhole essay as one unit in harmony in order to life. Black Hole, blackhole essay. Free Essays - PhDessay. com, blackhole essay, Aug 08, Accessed October 7, comAug Thе еconomic nationalism of Bookеr T.
Washington, which rеliеd on businеss ownеrship to providе thе mеans for group advancеmеnt, rеprеsеnts thе classic capitalistic approach to еconomic dеvеlopmеnt. Throughout thе twеntiеth. Langston Hughes was an important and defining figure of the Harlem Blackhole essay of the s up to the s, a decade of great activity in the African-American arts scene. Blackhole essay was a deadly disease that was causing destruction throughout the middle Ages.
It devastated many people as well as killed many people. It blackhole essay many names such as the, blackhole essay. The American Black bear Ursus blackhole essay ranges in length from one hundred and fifty centimeters to one hundred and eighty centimeters, and typically stands about seventy six centimeters to ninety.
According to the ideology blackhole essay the black family concept, blackhole essay, poverty has been described as black and intergenerational. The blackness of the family comes from the fact that a lot of. In this essay I am going to compose a piece of blackhole essay which will involve the tension of Segregation. The sources of magic are to be found in passion and ignorance - which make up the greater part of man. Desire, blackhole essay, ever reborn, never capable of being sated in.
One of the effects of slavery on the slaves was the stripping off of. We use cookies to give you the best experience possible. PhD Essay science Astronomy Black Hole Black Hole.
Order original essay sample specially for your assignment needs. get custom essay. Long-Tеrm Plan for Black Amеrica.
Blackhole essay type Research. America in Black blackhole essay White. Black bear. The Black Family: 40 years of lies. Black People Critical Essay. Belief in Black Magic and Witchcraft. The Re-inscription of Identity: Black Affirmation. Similar Topics Clean Water Space Exploration Thermodynamics Humanities Ecological Footprint Sociology Electronic Waste Language Time Travel Conservation Geometry Sustainability Cleanliness Nuclear Power Geography Philosophy Force Energy Crisis Psychology Motion.
Save time and let our verified experts help you. Hire writer.
How to Understand the Black Hole Image
, time: 9:19Black Hole Essays: Examples, Topics, Titles, & Outlines
In , the German astronomer Karl Schwarzchild attempted to theorize how a star could shrink to become what he called a "Black Hole". Schwarzchild predicted that our sun would have to shrink to less than two miles in radius Apr 30, · Black Hole Essay A black hole is an object with such a strong gravitational field that even light cannot escape from its surface. A black hole may be formed when a massive object (very big object) undergoes uncontrolled contraction (a collapse) because of the inward pull of its own gravity 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, by thinking about gravity under fairly simple
No comments:
Post a Comment