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Essay / Black Holes: What They Are and What They Do - 1956
Geologist John Mitchell is considered the first to invent the idea of a black hole. He said that if a force could compress the sun to a small enough size, it would have a gravitational field so strong that one would have to go faster than the speed of light to escape it (UTFC). All objects in the universe have what is called a Schwarzschild radius. The Schwarzschild radius of an object is the radius into which an object would have to be compressed to have an escape velocity greater than the speed of light or a black hole. (VSBH). Taking Earth as an example, if the entire earth were compressed to the size of a peanut, it would become a black hole (VSBH). The Earth would then have a gravitational field so strong that even light could not escape it. However, there is no known force capable of compressing the Earth to such a small size. Black holes were originally thought to have only simple mathematical concepts. There was apparently no possible way to compress an object into a space small enough to equal its Schwarzschild radius. However, later astronomer Subrahmanyan Chandrasekhar calculated that stars much larger than our own sun should theoretically be able to collapse into a black hole (UTFC). A star is like an inflated balloon with the force of gravity trying to compress the balloon inward and the air trying to push the balloon outward. Similarly, stars are held in balance by gravity attempting to cause them to collapse inward, countering external pressure from the star's internal reactions called nuclear fusion. If the star is large enough and the pressure inside disappears quickly, gravity should and will propel the star into a tiny point with almost infinite density with extremely strong gravitation......in the middle of the paper......is it its anti particle. When these particles appear, they quickly annihilate because they are exactly opposite each other (UCR). However, if one of these particle pairs appears at the event horizon of a black hole, the black hole's gravity will tear the particle pair apart. The normal particle will have just enough energy to escape the black hole. The particles escape as Hawking radiation. On the other hand, the antiparticle is sucked into the black hole. Since the antiparticle has negative mass, it actually decreases the mass of the black hole. The effects of Hawking radiation are generally canceled out by the fact that the black hole sucks in more than it radiates (SST). But eventually it will have nothing left to aspire to and will start to lose mass. And at the end of its life, it will become unstable and suddenly release all its mass in a big bang...