Black Holes

The Free essays given on our site were donated by anonymous users and should not be viewed as samples of our custom writing service. You are welcome to use them to inspire yourself for writing your own term paper. If you need a custom term paper related to the subject of Physics or Black Holes, you can hire a professional writer here in just a few clicks.
One of the many interesting and fascinating items of modern physics is black holes. Complex and unusual, these objects have captivated many people. They have even been featured in many science fiction stories. In actuality, these objects, may be quite commonplace, and are not, in fact, a discovery of recent years. This essay will serve to describe how black holes were discovered, and briefly describe what they are. Black holes are not holes in space, nor are they uniform in size, they are unusual and diverse in nature. One can briefly describe a black hole as an object that is so dense as that no radiation can escape its gravitational pull. (Cosmic 132) In fact, it's name is somewhat of a misnomer; black holes are in fact matter, and therefore tangible. One could even hold a black hole in one's hand, assuming the gravitational force hadn't crushed it. Black holes, originally thought to have only been formed by supermassive stars collapsing in by their own gravity, to a mass smaller than the moon, also exist in many other forms. "Proposed varieties include primordial black holes...low mass objects formed shortly after the beginning of the universe; stellar black holes...and supermassive black holes, equivalent to millions of stars in mass and located in the centers of galaxies." (Cosmic 132) The "primordial" black holes have only been theorized; created by the big bang. (Cosmic 110) The Hubble space telescope, on the other hand, has photographed supermassive black holes. Our own galaxy, the Milky Way, has a black hole in its center, having been measured indirectly. (Science Odyssey) Black holes have been found to give off X-rays; as matter is sucked into the black hole, large amounts of x-rays are expelled. One black hole candidate, Cygnus X-1, had been discovered by it's large x-ray signature. Black holes are one of the many irregular and fascinating objects in the universe. Black holes are not a concept of the 20th century, but a concept that goes back over 200 years. "[The] earliest mention of what is now called a black hole came... by a man named John Mitchell... [in] 1783.... Mitchell...postulate[d] a celestial body so compact that its escape velocity would exceed the speed of light.... Mitchell's concept was essentially ignored by the scientific community [of the time]...." (Cosmic 101-2) It was not until "French astronomer Pierre-Simon Laplace independently reached the same [conclusion] as Mitchell...[in 1796]." (Cosmic 102) Black holes, however remained a theory for quite some time. Albert Einstein would play a part in the story of the black hole; his theory of relativity "became a tool for understanding the bizarre gravitational effects of dense stars and black holes." (Cosmic 102) It was only until recently did astronomers and physicists get their first glimpse at black holes, through the Hubble space Telescope. Today, such great physicists as Stephen Hawking continue to entertain the unusual properties of the black hole, and may even envision new types and characteristics of them. Black

Our inspirational collection of essays and research papers is available for free to our registered users

Related Essays on Physics

Airplanes

Research: Airplanes are an efficient way of traveling to far places. Airplanes are amazing if you know what and how the air keeps the plane airborne. There are three components of flight: aerodynami...

read more
Albert Einstein

Albert Einstein Albert Einstein was a German-born American physicist best known for being the creator of the special and general theories of relativity and for this hypothesis concerning the par...

read more
The Rocket Science of Tennis and Its Racket

Its Not Rocket Science, Its Racket Science Remember warm Sunday afternoons when everyone loaded into the car with the intention of spending some family time together? For me, being one of eight ch...

read more
Fibre Optics

Page 1/3 F i b r e O p t i c s Preface Fibre optics is an emerging form of technology that uses minute fibres of glass or plastic to transmit light. The light source and method of delivery can ...

read more
Make and toke your own BONGS

********************************* * MAKE AND TOKE YOUR OWN BONGS! * ********************************* BY TONY MARX ==> A guide for everyone on the art of making bongs, from the simple to the sub...

read more
Genius Overlooked

Genius Overlooked Jess Brock Algebra III Summer School Mr. Palumbo July 24, 1999 Stephen Hawking is, all in all, one of the greatest thinkers of the twentieth centur...

read more