Black Holes Essay -- essays research papers fc

Black holes are one of the many things in the universe that scientists still have a muddy understanding about. However, with the incredible advances of technology, we are able to understand more than what we have in the past. Today, the only way to observe these incredible objects are by looking for radiation from the gas surround it. What are they? Black holes are no more than a dead star. A star that is considered alive would be our sun. The sun still produces energy by converting hydrogen into helium, thus considered to be alive. Once a star has run out of hydrogen, it begins its dying process. The final stage may result in a depressed dwarf, which is a small cool object no longer radiating energy, or if the star harbors enough mass it could result in a black hole. Black holes are defined as a collapsed star. The difference between a black dwarf and a black hole is the real mass of the star, which determines whether or not that star will have enough gravitation force to collap se upon its self and form a suction, or to delay as that small cool object, a black dwarf. Why do black holes suck everything in? To understand why material that enters a black hole is unable to escape, one must understand the concept of escape stop number. This is the velocity (speed) at which any material needs to exceed in direct to escape from something. Because, as Einstein said, What ever goes up must come down In other words, in order for a space trick to exit the Earths atmosphere so that it must not come down, it must exceed a certain speed. In order to opine out the Earths escape velocity one takes the square root of the planets mass divided by the planets rundle. PLANETS MASS / PLANETS RADIUS = ESCAPE VELOCITY On Earth with a radius of 6,500 km, the escape velocity would be 11 km/sec. Therefore to launch any object away from Earth, the object must travel (escape) faster than 11 km/sec. All of this is of course the result of gravity. However, intend a huge vise that squeezed the Earth to one-quarter its present size. What would then happen to the escape velocity? The velocity would increase because the mass would increase as the radius increased. Thus, taking the square root of a larger number, ending up with a larger number that being the escape velocity. The actual escape velocity of this hypothetical question would double it making it 22 km/sec. Taking ... ... horizon, which would emit radiation because of this. The thermal radiation is so hot that it is expected to be x-ray types of radiation. Once the radiation surpasses the even horizon, the x-rays cease and the material inside continues in great distortion. This is what scientists are trying to link to their observation of such radiocommunication active areas within out universe today. Bibliography Abell, George O. Exploration of The Universe. Holt, Rinehart and Winston, 1975. Berger, Melvin. Quasars, Pulsars and Black Holes In Space. Canada Longman Canada Limited, 1977. Bisnovatyi-Ko gan, G.S. At The Border of Eternity. Science. February, 27, 1998 1321- 1322. Chaisson, Eric. Relatively Speaking. Canada The Readers Digest Association Ltd., 1990. Down The Galactic Drain. Discover. April 1998 25. Shipman, devil L. Black Holes, Quasars, and The Universe. Boston Houghton Mifflin Company, 1976. Sullivan, Walter. Black Holes- The Edge of Space, The End of Time. New York Anchor Press, 1979. Taylor, John G. Black Holes the End of The Universe?. New York Random House Inc., 1973. The Astronomers- hard-hitting for Black Holes. Community television of Southern California, 1991.