On a Christian Cosmogony Or: Why Not Take Genesis 1 As History and Try to Put Together a Cosmogony That Fits It?
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9. the Cosmic Microwave Background
A5682: Introduction to Cosmology Course Notes 9. The Cosmic Microwave Background Reading: Chapter 8, sections 8.0-8.3. (We will cover 8.4 and 8.5 later.) “Re”combination After Big Bang Nucleosynthesis, the universe was still much too hot for the formation of neutral atoms. As expansion continued, the background radiation photons redshifted and the temperature dropped. Naively, one would expect p + e− → H when kT ∼ 13.6eV. Just as with deuterium synthesis, however, the high value of nγ/nb implies that the exponential tail of the photon distribution can dissociate hydrogen atoms. Less naively, we expect p + e− → H when kT ∼ 13.6eV/(− ln η) ∼ 0.65eV, corresponding to (1 + z) ≈ 2700. A more accurate version of this argument given in the textbook (section 9.3) yields a predicted redshift of (1 + z) ≈ 1370 for hydrogen formation. In practice, there are several complicating factors, e.g., any recombination direct to the ground state produces a photon that can immediately ionize another neutral atom unless the photon survives long enough to be redshifted below 13.6 eV. A proper, somewhat tricky calculation of cosmic recombination shows that there is a fairly rapid transition from a free electron fraction xe ≈ 1 to xe ≈ 0 at z ≈ 1100, with most of the transition occuring over a redshift range ∆z ≈ 80. In the laboratory, or in regions ionized by hot stars or quasars or shocks, the process p + e− → H is usually referred to as “recombination.” In the early universe, the protons and electrons were never in the form of hydrogen to begin with, so this process should arguably be called “combination” rather than “recombination.” But “combination” sounds rather silly, so “recombination” is still the standard term for this tran- sition. -
Inscribing Bodies in Vedic Cosmogony and Samskara Rituals Christine Boulos University of South Florida, [email protected]
University of South Florida Scholar Commons Graduate Theses and Dissertations Graduate School January 2011 From Cosmogony to Anthropogony: Inscribing Bodies in Vedic Cosmogony and Samskara Rituals Christine Boulos University of South Florida, [email protected] Follow this and additional works at: http://scholarcommons.usf.edu/etd Part of the American Studies Commons, Feminist, Gender, and Sexuality Studies Commons, and the Religion Commons Scholar Commons Citation Boulos, Christine, "From Cosmogony to Anthropogony: Inscribing Bodies in Vedic Cosmogony and Samskara Rituals" (2011). Graduate Theses and Dissertations. http://scholarcommons.usf.edu/etd/3715 This Thesis is brought to you for free and open access by the Graduate School at Scholar Commons. It has been accepted for inclusion in Graduate Theses and Dissertations by an authorized administrator of Scholar Commons. For more information, please contact [email protected]. From Cosmogony to Anthropogony: Inscribing Bodies in Vedic Cosmogony and Samskara Rituals by Christine E. Boulos A thesis submitted in partial fulfillment of the requirements for the degree of Master of Arts Department of Religious Studies College of Arts and Sciences University of South Florida Major Professor: Carlos Lopez, Ph.D. Pratyusha Basu, Ph.D. Wei Zhang, Ph.D. Date of Approval: November 1, 2011 Keywords: Judith Butler, performativity, sex, gender mantras Copyright © 2011, Christine E. Boulos DEDICATION This thesis is dedicated to my husband, David. Thank you for supporting me emotionally, physically, and spiritually. You have always made me and my education a priority, whether it was listening patiently as I tried to explain my thoughts and my projects, or spending the weekend with Elijah so I could get two more days in of writing or studying. -
Lecture Notes 2 the KINEMATICS of a HOMOGENEOUSLY EXPANDING UNIVERSE
MASSACHUSETTS INSTITUTE OF TECHNOLOGY Physics Department Physics 8.286: The Early Universe September 15, 2018 Prof. Alan Guth Lecture Notes 2 THE KINEMATICS OF A HOMOGENEOUSLY EXPANDING UNIVERSE INTRODUCTION: Observational cosmology is of course a rich and complicated subject. It is described to some degree in Barbara Ryden's Introduction to Cosmology and in Steven Wein- berg's The First Three Minutes, and I will not enlarge on that discussion here. I will instead concentrate on the basic results of observational cosmology, and on how we can build a simple mathematical model that incorporates these results. The key properties of the universe, which we will use to build a mathematical model, are the following: (1) ISOTROPY Isotropy means the same in all directions. The nearby region, however, is rather anisotropic (i.e., looks different in different directions), since it is dominated by the center of the Virgo supercluster of galaxies, of which our galaxy, the Milky Way, is a part. The center of this supercluster is in the Virgo cluster, approximately 55 million light-years from Earth. However, on scales of several hundred million light-years or more, galaxy counts which were begun by Edwin Hubble in the 1930's show that the density of galaxies is very nearly the same in all directions. The most striking evidence for the isotropy of the universe comes from the observa- tion of the cosmic microwave background (CMB) radiation, which is interpreted as the remnant heat from the big bang itself. Physicists have measured the temperature of the cosmic background radiation in different directions, and have found it to be extremely uniform. -
Foundation of Vortex Gravitation, Cosmology and Cosmogony
KATHMANDU UNIVERSITY JOURNAL OF SCIENCE, ENGINEERING AND TECHNOLOGY VOL. 6, No. II, NOVEMBER, 2010, pp 142- 169 FOUNDATION OF VORTEX GRAVITATION, COSMOLOGY AND COSMOGONY S. A. Orlov Petrozavodsk State University Corresponding author: [email protected] Received 1 April, 2010; Revised 19 October, 2010 A hypothesis is proposed concerning the cause of the origin of universal gravitation. This cause consists in a system of the ether vortex rotations. Physical and mathematical grounds are described and the formula for the determination of the space gravitation forces is deduced. On the basis of the vortex gravitation, the principles of creation and existence of the celestial bodies are shown. Methods of the use of the vortex gravitation properties for the space flight projection are proposed. Keywords: Ether Theory, Vortex Gravitation, Cosmology and Cosmogony 1. INTRODUCTION The proposed model of gravitation, cosmology and cosmogony is based on an assumption that the initial cause of rotations of all the celestial objects or their systems in the Universe is the vortex rotation (in corresponding space regions) of a gaseous cosmic-space medium, viz. the ether.The ether rotation occurs according to the same law as the rotation of a celestial body. In the solar system (torsion), the vortex-type ether rotation has the torsion character and corresponds to the circulation of the planets around the Sun (the Kepler 3-rd law). The torsion-like vortex ether rotation creates an ether pressure change inside the torsion in accordance with the aerodynamics laws. The pressure gradient in the space medium creates the expulsive force acting onto the bodies located in this medium, and this force is directed toward the center of the torsion. -
The First Three Minutes of Creation Transcript
The First Three Minutes of Creation Transcript Date: Wednesday, 7 December 2016 - 1:00PM Location: Museum of London 7 December 2016 The First Three Minutes of Creation Professor Joseph Silk The essence of life as we know it was produced in the first three minutes after the beginning of the universe. By this, I mean the stuff that we and the Earth are made of, particles of matter that we call baryons. But well before the baryons were created, the universe began from virtually nothing. There was empty space, and time, but no more. Yet within instants, thanks to the occurrence of quantum fluctuations, it attained its huge size, homogeneity and isotropy. The universe is enormous, it is relatively uniform when we smooth over the galaxies, and it looks the same in all directions. More remarkably, during this enormous inflation of space, the universe very early on developed the seeds from which all structure eventually formed. Let us look back in time. We can think of this as cosmic archaeology. We have two tools. One is indirect: it is the search for local fossils from the past. Historically, this was particularly important. Indeed interpretation of fossils, taken in a general sense, formed the basis of the cosmology of the ancients. The second is direct: the telescope. Modern technology has revolutionized the power of telescopes to probe the past. Historically, local fossils included geological estimates of the age of the earth. Clearly the universe must be older, but this was not the case with the age inferred from Hubble’s measurement of the recession of the galaxies. -
1 PRINCIPLES of the THEORY of VORTEX GRAVITATION S. A. Orlov
1 PRINCIPLES OF THE THEORY OF VORTEX GRAVITATION S. A. Orlov Petrozavodsk State University The developed theory proves that a universal vortex motion, along with the pressure variation in a space continuum called ‘ether’, is actually the source of the universal gravitation and creation of celestial bodies and their motion in the Universe. Calculations of the gravitation forces are carried out on the basis of the laws of mechanics of continua and (or) aerodynamics with the use of the Navier-Stokes equations. As a result of the solution, an algebraic formula for the gravitation forces is obtained. The reliability of this formula is supported by its conformity to the astronomical data, and also to the Newton’s empirical formula for universal gravitation. The main advantage of the proposed theory is that, on the basis of it, it is possible to explain all the phenomena and laws observed in the cosmic space, viz.: motion of celestial bodies; mutual closing and moving away of galaxies; an origin of celestial bodies, black holes, and the Universe as a whole; the nature of gravity; the speed of gravitation; the strengths of magnetic fields of celestial bodies, etc. 1. Principles of the Theory The proposed principle of the universal attraction forces is worked out on the following basis: Cosmic space is filled with a cosmic matter (ether) which forms an infinite spatial system of torsion vortexes. The physical characteristics of the ether are [1]: density – 8,85·10-12 kg/m3, pressure – 2·1032 Pa, temperature – 7·10-51 К. 2. Vortex Gravitation In the present work, we do not consider the origin of the cosmic vortexes. -
Astronomy 1 Cosmology
Astronomy 1 Cosmology Dr. I. Waddington University of Bristol 2002/2003 Copyright c 2003 University of Bristol. These lecture notes are for the exclusive use of members of the Astronomy 1 class and must not be distributed outside the University of Bristol. Figures from journals published by the American Astronomical Society (AAS) and the Royal Astronomical Society (RAS) are reproduced for educational use with permission from the publishers. Astronomy 1: Cosmology 2002/2003 Astronomy 1: Cosmology Lecturer: Dr. I. Waddington, Room 4.21b, [email protected] Dates: weeks 21–23 Lecture notes: www.star.bristol.ac.uk/iw/ast1/ and in the library Practical: week 23 (May 8) Problem sheet/tutorial: week 23 Additional reading: M. Zeilik & S. A. Gregory, Introductory Astronomy & Astrophysics, ISBN: 0-03-006228-4, chapters 22, 25, 26 D. J. Raine & E. G. Thomas, An Introduction to the Science of Cosmology, ISBN: 0-7503- 0405-7 (excellent book, goes well-beyond this course but worth considering) Steven Weinberg, The First Three Minutes, ISBN: 0-00-654024-4 (popular account, little maths) Page i Astronomy 1: Cosmology 2002/2003 Page ii Astronomy 1: Cosmology 2002/2003 Introduction The Goal of Cosmology • to explain the structure & history of the universe as a whole ⇒ the ‘Hot Big Bang’ theory The Key Observations & Physics • the universe is expanding ⇒ gravitational dynamics (General Relativity) ⇒ approximate model using Newtonian gravity • the universe is filled with thermal radiation ⇒ quantum physics, thermodynamics • galaxies & large-scale structures -
The First Three Minutes of the Universe Dr
The First Three Minutes of the Universe Dr. Russell Herman Mathematics and Statistics Physics and Physical Oceanography The First Three Minutes, UNC Wilmington, College Day-2008 1 http://www.dimijianimages.com/More-p20-Madagascar-p7/night-sky-from-Madagascar-gallery.htm The First Three Minutes, UNC Wilmington, College Day-2008 2 Known Universe Age - 13.7 billion years old Size - >93 billion lights years across Density - 9.9 × 10−30 gms/cubic centimeter. Appears to consist of 73% dark energy, 23% dark matter 4% ordinary matter. Black holes, white dwarfs, galaxies, stars, planets, comets, asteroids, WIMPs, MACHOs, ... The First Three Minutes, UNC Wilmington, College Day-2008 3 The First Three Minutes, UNC Wilmington, College Day-2008 4 htt p://www.particleadventure.org/ In the beginning ... http://www.spaceandmotion.com/cosmology-history-astronomy-universe-space.htm Thales of Miletus (624 BC – 546 BC) Pythagoras (585-497 BC) Harmony of the Spheres Socrates (469-399 BC) Democritus (460-370 BC) Plato (427-347 BC) Aristotle (384-322 BC) Archimedes (287-212 BC) Earth is fixed and immovable, stars fixed in sky, planets = wanderers Hipparchus (190-120 BC) - seasonal inconsistencies The First Three Minutes, UNC Wilmington, College Day-2008 5 Geocentric System Ptolemy (85-165) http://www.sacred-texts.com/eso/sta/sta03.htm http://www.daviddarling.info/images/epicycle.gif The First Three Minutes, UNC Wilmington, College Day-2008 6 Heliocentric System Copernicus (1473-1543) The First Three Minutes, UNC Wilmington, College Day-2008 7 Scientific Deductions Tycho Brahe Galileo Galilei (1546-1601) (1564-1642) Johannes Kepler (1571-1630) The First Three Minutes, UNC Wilmington, College Day-2008 8 The Clockwork Universe Sir Isaac Newton (1642-1727) Principia (1689) Philosophiae Naturalis Principia Mathematica (Mathematical Principles of Natural Philosophy) (1687) Laws of Motion Law of Gravitation Kepler's Laws Explained Calculus Unification .. -
Steven Weinberg the First Three Minutes
Steven Weinberg The First Three Minutes A modem view of the origin of the universe FLAMINGO Published by Fontana Paperbacks Contents Preface 9 1 Introduction: the Giant and the Cow 13 2 The Expansion of the Universe 20 3 The Cosmic Microwave Radiation Background 52 4 Recipe for a Hot Universe 81 5 The First Three Minutes 102 6 A Historical Diversion 120 7 The First One-hundredth Second 130 8 Epilogue: the Prospect Ahead 145 Afterword 151 TABLES : 1. Properties of Some Elementary Particles 163 2. Properties of Some Kinds of Radiation 164 Glossary 165 Preface This book grew out of a talk I gave at the dedication of the Undergraduate Science Center at Harvard in November 1973. Erwin Glikes, president and publisher of Basic Books, heard of this talk from a mutual friend, Daniel Bell, and urged me to turn it into a book. At first I was not enthusiastic about the idea. Although I have done small bits of research in cosmology from time to time, my work has been much more concerned with the physics of the very small, the theory of elementary particles. Also, elementary particle physics has been extraordinarily lively in the last few years, and I had been spending too much time away from it, writing non-technical articles for various magazines. I wanted very much to return full time to my natural habitat, the Physical Review. However, I found that I could not stop thinking about the idea of a book on the early universe. What could be more interesting than the problem of Genesis? Also, it is in the early universe, especially the first hundredth of a second, that the problems of the theory of elementary particles come together with the problems of cosmology. -
S.Weinberg:The First Three Minutes
The First Three Minutes A Modern View of the Origin of the Universe S.Weinberg April 27-28, 2006 I was there! Not during the first three minutes of course, but when the original lecture by Weinberg was delivered in the newly built Science Center back in 19731. I must admit that I did not recall very much of the lecture, except its punchline (absent in the book) that after the first three minutes nothing really interesting has happened in the universe, because by then essentially all the hydrogen and helium - the main material existing in the universe, had been formed. The book was written a few years afterwards (refering to the lecture, not the forming of the hydrogen and helium) and I bought myself a copy back in the summer of 1979. I read it for the first time on a flight back from San Fransisco to New York taken together with my just widowed mother, and fortuitously the last page of the book was written by the author when also flying across the continent back to Boston. Reading it a second time it makes more of an intellectual impact than when encoun- tered for the first time. You are supposed to be more intellectually astute when young, on the other hand experience and wisdom can usually make up for reduced mental flexibility. And it is notoriously well-known that youth seldom exploits its advantages. Why should it? life is going to go on for ever. So what is the book really about? Cosmology is really on the border of metaphysics at least as far as it comes to ontology. -
Introduction to Cosmology
Introduction to Cosmology Barbara Ryden Department of Astronomy The Ohio State University January 13, 2006 Contents Preface v 1 Introduction 1 2 Fundamental Observations 7 2.1 Dark night sky . 7 2.2 Isotropy and homogeneity . 11 2.3 Redshift proportional to distance . 15 2.4 Types of particles . 22 2.5 Cosmic microwave background . 28 3 Newton Versus Einstein 32 3.1 Equivalence principle . 33 3.2 Describing curvature . 39 3.3 Robertson-Walker metric . 44 3.4 Proper distance . 47 4 Cosmic Dynamics 55 4.1 Friedmann equation . 57 4.2 Fluid and acceleration equations . 65 4.3 Equations of state . 68 4.4 Learning to love lambda . 71 5 Single-Component Universes 79 5.1 Evolution of energy density . 79 5.2 Curvature only . 86 5.3 Spatially at universes . 91 5.4 Matter only . 94 ii CONTENTS iii 5.5 Radiation only . 95 5.6 Lambda only . 97 6 Multiple-Component Universes 101 6.1 Matter + curvature . 104 6.2 Matter + lambda . 108 6.3 Matter + curvature + lambda . 112 6.4 Radiation + matter . 116 6.5 Benchmark Model . 118 7 Measuring Cosmological Parameters 126 7.1 \A search for two numbers" . 126 7.2 Luminosity distance . 131 7.3 Angular-diameter distance . 136 7.4 Standard candles & H0 . 141 7.5 Standard candles & acceleration . 144 8 Dark Matter 155 8.1 Visible matter . 156 8.2 Dark matter in galaxies . 159 8.3 Dark matter in clusters . 164 8.4 Gravitational lensing . 170 8.5 What's the matter? . 175 9 The Cosmic Microwave Background 179 9.1 Observing the CMB . -
Cosmogony Today: Counter-Cosmogony, Perspectivism, and the Return of Anti- Biblical Polemic
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by LSE Research Online Michael W. Scott Cosmogony today: counter-cosmogony, perspectivism, and the return of anti- biblical polemic Article (Accepted version) (Refereed) Original citation: Scott, Michael W. (2015) Cosmogony today: counter-cosmogony, perspectivism, and the return of anti-biblical polemic. Religion and Society: Advances in Research, 6 (1). pp. 44-61. ISSN 2150-9298 DOI: 10.3167/arrs.2015.060104 © 2015 Berghahn Journals This version available at: http://eprints.lse.ac.uk/61693/ Available in LSE Research Online: September 2015 LSE has developed LSE Research Online so that users may access research output of the School. Copyright © and Moral Rights for the papers on this site are retained by the individual authors and/or other copyright owners. Users may download and/or print one copy of any article(s) in LSE Research Online to facilitate their private study or for non-commercial research. You may not engage in further distribution of the material or use it for any profit-making activities or any commercial gain. You may freely distribute the URL (http://eprints.lse.ac.uk) of the LSE Research Online website. This document is the author’s final accepted version of the journal article. There may be differences between this version and the published version. You are advised to consult the publisher’s version if you wish to cite from it. Forthcoming, 2015. Religion and Society: Advances in Research, vol. 6 no. 1. Cosmogony Today: Counter-Cosmogony, Perspectivism, and the Return of Anti- Biblical Polemic Michael W.