'The Ultimate Guide to Black Holes" - BBC documentary
My source: YouTube
Last viewed: 24th September 2013,
Click the image to be directed to this documentary.
Please excuse the strange opening of the video.
Einstein's general relativity (theory of gravity - 1916) mathematically concludes with (0=infinity) meaning that gravity can collapse to create a singular point of infinite mass which contains no space. This is known as a singularity which exists at the centre of a black hole. It is the point where physics as we know it breaks down. This means that no one (not even Einstein who despite his own mathematics dictating their existence, denied that nature would allow them exist) can explain what happens inside a black hole or what can come out of one. Once beyond the 'event horizon' (the circular outside), matter being sucked into a black hole passes the 'inner horizon'. At this point matter is now travelling at the same speed outwards (as it tries to escape) as it is being pulled inwards and therefore is doomed to continue falling. In the same way that you are doomed to fall into a waterfall as soon as the speed of your swimming matches the speed of the water (the same experience of not being able to fight water rapids). This happens to all matter, even light (C) which travels at C = 671 million mph. This is where the name 'black hole' derives. Due to their very nature of being black, it is almost impossible to see a black hole but astrophysicists and cosmologists have developed ways of not only detecting them but also ways to measure them, to assess how common they are, where they exist, their proportional relation to their galaxy (which they are the centre of) and to conclude that black holes may be as creative as they are destructive.
BA Criminology & Sociology
University of Kent
Third year undergraduate