cosmological principle Concepts

Coming of Age in the Milky Way

by Timothy Ferris · 30 Jun 1988 · 661pp · 169,298 words

, 1982. Barnett, Lincoln. The Universe and Dr. Einstein. New York: Sloane, 1948. Venerable popularization of relativity theory. Barrow, John D., and Frank Tipler. The Anthropic Cosmological Principle. London: Oxford University Press, 1986. Barut, Asim O., Alwyn van der Merwe, and Jean-Pierre Vigier, eds. Quantum, Space, and Time—The Quest Continues. London

Big Bang

by Simon Singh · 1 Jan 2004 · 492pp · 149,259 words

? But Einstein reduced his task to a manageable level by making a single simplifying assumption about the universe. Einstein’s assumption is known as the cosmological principle, which states that the universe is more or less the same everywhere. More specifically, the principle assumes that the universe is isotropic, which means that

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it looks the same in every direction—which certainly seems to be the case when astronomers stare into deep space. The cosmological principle also assumes that the universe is homogeneous, which means that the universe looks the same wherever you happen to be, which is another way of

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unchanged, as long as matter was created in between the galaxies, as shown in Figure 86. All cosmological thinking had previously been guided by the cosmological principle, which stated that our bit of the universe, the Milky Way and its environs, is essentially the same as anywhere else in the universe. In

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. Einstein exploited this principle when he first applied general relativity to the whole universe. Gold, however, was going one step further and postulated the perfect cosmological principle: not only is our patch of the universe the same as any other patch, but our era in the universe is the same as any

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universe broadly the same everywhere, but also everywhen. Gold believed that the Steady State model of the universe was a natural consequence of his perfect cosmological principle. Figure 86 Diagram (a) shows expansion in a Big Bang universe. A small patch of the universe doubles its area and then doubles its area

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became clear that his equations implied either a growing or a shrinking universe. By effectively introducing anti-gravity, the equations then permitted a static universe. cosmological principle The principle that no location in the universe is preferred over any other, and that the overall features of the universe appear to be the

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an object would show a stellar parallax of one arcsecond. A distance of 1 million parsecs is known as 1 megaparsec (Mpc). perfect cosmological principle An extension of the cosmological principle which states that the universe is not only homogeneous and isotropic, but also unchanging with time. This principle is the basis of the

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) The father of inflation theory explains how it came to be and what it says about our universe. F. Tipler and J. Barrow, The Anthropic Cosmological Principle (OUP, 1996) An exploration of the relationship between the existence of our universe and the existence of life within it. Mario Livio, The Accelerating Universe

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, 458, 461,471, 481, 482; variations in 446-62, 452, 461 cosmic-ray physics 158 cosmological constant 148-9, 151-2, 153, 161, 273-4 cosmological principle 146,345; perfect 347 Coulson, Charles 484 creation 180, 261,276,284, 489-90, Table 4,6; continuous 345,347-8, 364; date of 76

Life Is Simple: How Occam's Razor Set Science Free and Shapes the Universe

by Johnjoe McFadden · 27 Sep 2021

Zhitnitsky, A., ‘Baryon Asymmetry, Dark Matter, and Quantum Chromodynamics’, Physical Review D, 71, 023519 (2005). 7. Barrow, J. D., and Tipler, F. J., The Anthropic Cosmological Principle (Clarendon Press, 1986). 8. Smolin, L., The Life of the Cosmos (Oxford University Press, 1999). 9. Smolin, L., Time Reborn: From the Crisis in Physics

From eternity to here: the quest for the ultimate theory of time

by Sean M. Carroll · 15 Jan 2010 · 634pp · 185,116 words

surprise to us by now: the difference between time and space. The idea that matter is smooth on large scales can be elevated into the “Cosmological Principle”: There is no such thing as a special place in the universe. But it seems clear that there is a special time in the universe

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leading astrophysicists—Hermann Bondi, Thomas Gold, and Fred Hoyle—suggested the Steady State model of the universe.43 They based this model on the “Perfect Cosmological Principle”—there is no special place and no special time in the universe. In particular, they suggested that the universe wasn’t any hotter or denser

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Reality: From Quantum to Cosmos, honoring John Wheeler’s 90th birthday. Cambridge: Cambridge University Press, 2004. Barrow, J. D., and Tipler, F. J. The Anthropic Cosmological Principle. Oxford: Oxford University Press, 1988. Baum, E. B. What Is Thought? Cambridge, MA: MIT Press, 2004. Bekenstein, J. D. “Black Holes and Entropy.” Physical Review

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radiation and the horizon problem and inflationary cosmology and reconstruction of the past and relativity cosmic no-hair theorem cosmic strings cosmological constant cosmological horizon “Cosmological Principle,” cosmology. See also specific models CPLEAR experiment CPT Theorem creationism Crick, Francis Cronin, James culture of the sciences “The Curious Case of Benjamin Button” (Fitzgerald

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, Roger and black holes and evolution of entropy and lumpiness of the universe and maximizing entropy and singularities on structure and entropy Penzias, Arno “Perfect Cosmological Principle,” periodicity Perlmutter, Saul perpetual motion persistence phase transitions phenomenological framework Philosophiæ Naturalis Principia Mathematica (Newton) photons and double-slit experiment and the early universe and

The Beginning of Infinity: Explanations That Transform the World

by David Deutsch · 30 Jun 2011 · 551pp · 174,280 words

Popper, Conjectures and Refutations (Routledge, 1963) Karl Popper, The Open Society and Its Enemies (Routledge, 1945) Further reading John Barrow and Frank Tipler, The Anthropic Cosmological Principle (Clarendon Press, 1986) Susan Blackmore, The Meme Machine (Oxford University Press, 1999) Nick Bostrom, ‘Are You Living in a Computer Simulation?’, Philosophical Quarterly 53 (2003

Stephen Hawking

by Leonard Mlodinow · 8 Sep 2020 · 209pp · 68,587 words

. That the laws of physics can is a wonder that every physicist marvels over. Stephen studied those books and papers into which our knowledge of cosmological principles was condensed, and he learned fast. He expected to die in a few years, but at least in cosmology he would be spending his time

Lost in Math: How Beauty Leads Physics Astray

by Sabine Hossenfelder · 11 Jun 2018 · 340pp · 91,416 words

and the 7.65 MeV carbon resonance.” Preprint. http://philsci-archive.pitt.edu/5332. 25. See, for example, Barrow JD, Tipler FJ. 1986. The anthropic cosmological principle. Oxford, UK: Oxford University Press; Davies P. 2007. Cosmic jackpot: why our universe is just right for life. Boston: Houghton Mifflin Harcourt. 26. Harnik RD

Why People Believe Weird Things: Pseudoscience, Superstition, and Other Confusions of Our Time

by Michael Shermer · 1 Jan 1997 · 404pp · 134,430 words

book, The Mind of God. The nod for the most serious attempts, however, has to go to John Barrow and Frank Tipler's 1986 Anthropic Cosmological Principle and Frank Tipler's 1994 The Physics of Immortality: Modern Cosmology, God and the Resurrection of the Dead. In the first book, the authors claim

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described the Anthropic Principle. "We thought it would be a good idea to take the idea and expand it out. And that became the Anthropic Cosmological Principle. In our last chapter we combined the idea from Freeman Dyson [1979] of life going on forever, with physical reductionism and global general relativity; the

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: Basic. Barkow, J. H., L. Cosmides, and J. Tooby. 1992. The Adapted Mind. Oxford: Oxford University Press. Barrow, J., and F. Tipler. 1986. The Anthropic Cosmological Principle. Oxford: Oxford University Press. Barston, A. 1994. Witch Craze: A New History of European Witch Hunts. New York: Pandora/HarperCollins. Bass, E., and L. Davis

Giving the Devil His Due: Reflections of a Scientific Humanist

by Michael Shermer · 8 Apr 2020 · 677pp · 121,255 words

universe’s “fine-tuning” is the “anthropic principle,” most forcefully argued by the physicists John Barrow and Frank Tipler in their 1986 book The Anthropic Cosmological Principle: It is not only man that is adapted to the universe. The universe is adapted to man. Imagine a universe in which one or another

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. 2000. Just Six Numbers: The Deep Forces That Shape the Universe. New York: Basic Books. 3. Barrow, John D. and Frank Tipler. 1988. The Anthropic Cosmological Principle. Oxford: Oxford University Press, vii. 4. Leslie, John and Robert Lawrence Kuhn. 2013. The Mystery of Existence: Why is There Anything at All? Wiley-Blackwell

Five Billion Years of Solitude: The Search for Life Among the Stars

by Lee Billings · 2 Oct 2013 · 326pp · 97,089 words

, The Five Ages of the Universe: Inside the Physics of Eternity (New York: Free Press, 1999). John D. Barrow and Frank J. Tipler, The Anthropic Cosmological Principle (New York: Oxford University Press, 1986). Marcia Bartusiak, The Day We Found the Universe (New York: Pantheon, 2009). Lee Billings, “Cosmic Commodities: How much is