PDF-(BOOS)-A Brief History of Time: From the Big Bang to Black Holes

Stephen Hawking one of the most brilliant theoretical physicists in history wrote the modern classic A Brief History of Time to help nonscientists understand fundamental questions of physics and our existence where did the universe come from How and why did it begin Will it come to an end and if so howHawking attempts to deal with these questions and where we might look for answers using a minimum of technical jargon Among the topics gracefully covered are gravity black holes the Big Bang the nature of time and physicists search for a grand unifying theory This is deep science the concepts are so vast or so tiny that they cause mental vertigo while reading and one cant help but marvel at Hawkings ability to synthesize this difficult subject for people not used to thinking about things like alternate dimensions The journey is certainly worth taking for as Hawking says the reward of understanding the universe may be a glimpse of the mind of GodFrom Hawking dot org dot ukA Brief History of Time published in 1988 was a landmark volume in science writing and in worldwide acclaim and popularity with more than 9 million copies in print globally The original edition was on the cutting edge of what was then known about the origins and nature of the universe But the ensuing years have seen extraordinary advances in the technology of observing both the micro and the macrocosmic worldobservations that have confirmed many of Hawkings theoretical predictions in the first edition of his book Now a decade later this edition updates the chapters throughout to document those advances and also includes an entirely new chapter on Wormholes and Time Travel and a new introduction It makes vividly clear why A Brief History of Time has transformed our view of the universe Refers to later editions. Time begins. The universe begins ~13.7 Billion years ago. The universe begins as the size of a single atom. The universe began as . a . violent expansion. All matter and space were created from a single point of pure energy . A Timeline. What do you think you know about the Big Bang?. Take a couple of minutes to write down what you know, or think you know about the big bang.. The Universe and Time. The Big Bang is a theory that tells a story: the story of our universe.. EVIDENCE FOR BIG BANG. Hot Big Bang Model:. The universe . began expanding a finite time ago from a very . dense. , very . hot. . initial state.. Dense. = particles packed close together. . Hot. . Escape Velocity. The minimum velocity needed to leave the vicinity of a body without ever being pulled back by the . body’. s . gravity is the . escape velocity. . . Escape Velocity. The escape velocity from a body depends on its . Astronomy - . The branch of science that deals with celestial objects, space, and the physical universe as a whole. .. Cosmology – The study of the origin and large scale function of the universe. In this session we will look at an overview of these topics in reference to Biblical Creation vs. Naturalism . Hubble Expansion and the Big Bang . The fact that more distant galaxies. have higher . redshifts. . indicates that the universe is expanding. This implies that the universe was born in a huge explosion, or . . The Obvious Question. Once matter enters a black hole, is it fated never to reappear? . The answer seemed obvious – a clear . “. yes. ”. . – until about . forty . years . ago.. Oops!. Apparently not! . Turn in cosmology questions!. Starting in 1917, . Vesto. . Slipher. . noted that most . galaxies were . receding away from us. In 1927, using . Einstein’s equations . in the Theory of Relativity, Georges . blue hole. is a submarine cave or underwater sinkhole. They are also called vertical caves. There are many different blue holes located around the world, from Belize and the Bahamas to the Red Sea. Blue holes are roughly circular, steep-walled depressions, and so named for the dramatic contrast between the dark blue, deep waters of their depths and the lighter blue of the shallows around them.. If you go to your school every day and every day it looks the same do you think much about it?. If one day you go there after the holidays and in the main entrance there is a large sculpture what would you do? Look at it. What would you think? . (Birth Of The Universe). Running the Expansion Backward. Temperature of the Universe from the Big Bang to the present (10. 10. years ~ 3 x 10. 17. seconds). A Scientific History of the Universe. The Big Bang Theory. If the universe was 1 year old . . .. Science/religion – either/or?. How do we predict the conditions of the early universe?. What are the different eras in the early universe?. What key lines of evidence support the Big Bang model?. as Philosophy not Science. Dr John Hartnett. 1929 - astronomer discovered . - ‘nebulae’ are galaxies. - redshifts of galaxies. - the Hubble Law . - interpreted to mean that . the Universe is expanding. George Gamov . (1904 – 1968). 1946: Gamov suggests that . all. chemical elements were synthesized during . a very hot and dense phase . of the early Universe. 1948: Gamov and his PhD student Alpher publish the results in the April 1.