Copernicus and the Origin of His Heliocentric System
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CURRICULUM VITA of ROBERT HAHN January 2015
CURRICULUM VITA OF ROBERT HAHN January 2015 I. PERSONAL A. Present University Department: Philosophy. II. EDUCATION Ph.D., Philosophy, Yale University, May 1976. M. Phil., Philosophy, Yale University, May 1976. M.A., Philosophy, Yale University, December 1975. B.A., Philosophy, Union College, Summa cum laude, June 1973. Summer Intensive Workshop in Ancient Greek, The University of California at Berkeley, 1973. Summer Intensive Workshop in Sanskrit, The University of Chicago, 1972. III. PROFESSIONAL EXPERIENCE 2002-present Professor of Philosophy, Southern Illinois University at Carbondale 1988-2001 Associate Professor of Philosophy, Southern Illinois University at Carbondale. 1982-1987 Assistant Professor of Philosophy, Southern Illinois University at Carbondale. 1981-1982 Assistant Professor of Philosophy, Denison University. 1978-1981 Assistant Professor of Philosophy and the History of Ideas, Brandeis University. 1979-1981 Assistant Professor, Harvard University, Extension. 1980 (Spring) Visiting Professor, The American College of Greece (Deree College), Athens, Greece. 1980 (Summer) Visiting Professor, The University of Maryland: European Division, Athens, Greece (The United States Air Force #7206 Air Base Group). 1977-1978 Assistant Professor of Philosophy, The University of Texas, Arlington. 1977 (Spring) Lecturer in Philosophy, Yale University. 1976 (Fall) Postdoctoral Research Fellow in Philosophy, The University of California at Berkeley. IV. TEACHING EXPERIENCE A. Teaching Interests and Specialties: History of Philosophy, History/Philosophy -
1 Timeline 2 Geocentric Model
Ancient Astronomy Many ancient cultures were interested in the night sky • Calenders • Prediction of seasons • Navigation 1 Timeline Astronomy timeline • ∼ 3000 B.C. Stonehenge • 2136 B.C. First record of solar eclipse by Chinese astronomers • 613 B.C. First record of Halley’s comet by Zuo Zhuan (China) • ∼ 270 B.C. Aristarchus proposes Earth goes around Sun (not a popular idea at the time) • ∼ 240 B.C. Eratosthenes estimates Earth’s circumference • ∼ 130 B.C. Hipparchus develops first accurate star map (one of the first to use R.A. and Dec) 2 Geocentric model The Geocentric Model • Greek philosopher Aristotle (384-322 B.C.) • Uniform circular motion • Earth at center of Universe Retrograde Motion • General motion of planets east- ward • Short periods of westward motion of planets • Then continuation eastward How did the early Greek philosophers make retrograde motion consistent with uniform circular motion? 3 Ptolemy Ptolemy’s Geocentric Model • Planet moves around a small circle called an epicycle • Center of epicycle moves along a larger cir- cle called a deferent • Center of deferent is at center of Earth (sort of) Ptolemy’s Geocentric Model • Ptolemy invented the device called the eccentric • The eccentric is the center of the deferent • Sometimes the eccentric was slightly off center from the center of the Earth Ptolemy’s Geocentric Model • Uniform circular motion could not account for speed of the planets thus Ptolemy used a device called the equant • The equant was placed the same distance from the eccentric as the Earth, but on the -
A Philosophical and Historical Analysis of Cosmology from Copernicus to Newton
University of Central Florida STARS Electronic Theses and Dissertations, 2004-2019 2017 Scientific transformations: a philosophical and historical analysis of cosmology from Copernicus to Newton Manuel-Albert Castillo University of Central Florida Part of the History of Science, Technology, and Medicine Commons Find similar works at: https://stars.library.ucf.edu/etd University of Central Florida Libraries http://library.ucf.edu This Masters Thesis (Open Access) is brought to you for free and open access by STARS. It has been accepted for inclusion in Electronic Theses and Dissertations, 2004-2019 by an authorized administrator of STARS. For more information, please contact [email protected]. STARS Citation Castillo, Manuel-Albert, "Scientific transformations: a philosophical and historical analysis of cosmology from Copernicus to Newton" (2017). Electronic Theses and Dissertations, 2004-2019. 5694. https://stars.library.ucf.edu/etd/5694 SCIENTIFIC TRANSFORMATIONS: A PHILOSOPHICAL AND HISTORICAL ANALYSIS OF COSMOLOGY FROM COPERNICUS TO NEWTON by MANUEL-ALBERT F. CASTILLO A.A., Valencia College, 2013 B.A., University of Central Florida, 2015 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Arts in the department of Interdisciplinary Studies in the College of Graduate Studies at the University of Central Florida Orlando, Florida Fall Term 2017 Major Professor: Donald E. Jones ©2017 Manuel-Albert F. Castillo ii ABSTRACT The purpose of this thesis is to show a transformation around the scientific revolution from the sixteenth to seventeenth centuries against a Whig approach in which it still lingers in the history of science. I find the transformations of modern science through the cosmological models of Nicholas Copernicus, Johannes Kepler, Galileo Galilei and Isaac Newton. -
What Did Shakespeare Know About Copernicanism?
DOI: 10.2478/v10319-012-0031-x WHAT DID SHAKESPEARE KNOW ABOUT COPERNICANISM? ALAN S. WEBER Weill Cornell Medical College–Qatar Abstract: This contribution examines Shakespeare’s knowledge of the cosmological theories of Nicolaus Copernicus (1473-1543) as well as recent claims that Shakespeare possessed specialized knowledge of technical astronomy. Keywords: Shakespeare, William; Copernicus, Nicolaus; renaissance astronomy 1. Introduction Although some of his near contemporaries lamented the coming of “The New Philosophy,” Shakespeare never made unambiguous or direct reference to the heliocentric theories of Nicolaus Copernicus (1473-1543) in his drama or poetry. Peter Usher, however, has recently argued in two books Hamlet’s Universe (2006) and Shakespeare and the Dawn of Modern Science (2010) that Hamlet is an elaborate allegory of Copernicanism, which in addition heralds pre-Galilean telescopic observations carried out by Thomas Digges. Although many of Usher’s arguments are excessively elaborate and speculative, he raises several interesting questions. Just why did Shakespeare, for example, choose the names of Rosenskrantz and Guildenstern for Hamlet’s petard-hoisted companions, two historical relatives of Tycho Brahe (the foremost astronomer during Shakespeare’s floruit)? What was Shakespeare’s relationship to the spread of Copernican cosmology in late Elizabethan England? Was he impacted by such Copernican-related currents of cosmological thought as the atomism of Thomas Harriot and Nicholas Hill, the Neoplatonism of Kepler, and -
Ptolemy's Almagest
Ptolemy’s Almagest: Fact and Fiction Richard Fitzpatrick Department of Physics, UT Austin Euclid’s Elements and Ptolemy’s Almagest • Ancient Greece -> Two major scientific works: Euclid’s Elements and Ptolemy’s “Almagest”. • Elements -> Compendium of mathematical theorems concerning geometry, proportion, number theory. Still highly regarded. • Almagest -> Comprehensive treatise on ancient Greek astronomy. (Almost) universally disparaged. Popular Modern Criticisms of Ptolemy’s Almagest • Ptolemy’s approach shackled by Aristotelian philosophy -> Earth stationary; celestial bodies move uniformly around circular orbits. • Mental shackles lead directly to introduction of epicycle as kludge to explain retrograde motion without having to admit that Earth moves. • Ptolemy’s model inaccurate. Lead later astronomers to add more and more epicycles to obtain better agreement with observations. • Final model hopelessly unwieldy. Essentially collapsed under own weight, leaving field clear for Copernicus. Geocentric Orbit of Sun SS Sun VE − vernal equinox SPRING SS − summer solstice AE − autumn equinox WS − winter solstice SUMMER93.6 92.8 Earth AE VE AUTUMN89.9 88.9 WINTER WS Successive passages though VE every 365.24 days Geocentric Orbit of Mars Mars E retrograde station direct station W opposition retrograde motion Earth Period between successive oppositions: 780 (+29/−16) days Period between stations and opposition: 36 (+6/−6) days Angular extent of retrograde arc: 15.5 (+3/−5) degrees Immovability of Earth • By time of Aristotle, ancient Greeks knew that Earth is spherical. Also, had good estimate of its radius. • Ancient Greeks calculated that if Earth rotates once every 24 hours then person standing on equator moves west to east at about 1000 mph. -
1 Science LR 2711
A Scientific Response to the Chester Beatty Library Collection Contents The Roots Of Modern Science A Scientific Response To The Chester Beatty Library Collection 1 Science And Technology 2 1 China 3 Science In Antiquity 4 Golden Age Of Islamic Science 5 Transmission Of Knowledge To Europe 6 A Scientific Response To The Chester Beatty Library Collections For Dublin City Of Science 2012 7 East Asian Collections The Great Encyclopaedia of the Yongle Reign (Yongle Dadian) 8 2 Phenomena of the Sky (Tianyuan yuli xiangyi tushuo) 9 Treatise on Astronomy and Chronology (Tianyuan lili daquan) 10 Illustrated Scrolls of Gold Mining on Sado Island (Sado kinzan zukan) 11 Islamic Collections Islamic Medicine 12 3 Medical Compendium, by al-Razi (Al-tibb al-mansuri) 13 Encyclopaedia of Medicine, by Ibn Sina (Al-qanun fi’l-tibb) 14 Treatise on Surgery, by al-Zahrawi (Al-tasrif li-man ‘ajiza ‘an al-ta’lif) 15 Treatise on Human Anatomy, by Mansur ibn Ilyas (Tashrih al-badan) 16 Barber –Surgeon toolkit from 1860 17 Islamic Astronomy and Mathematics 18 The Everlasting Cycles of Lights, by Muhyi al-Din al-Maghribi (Adwar al-anwar mada al-duhur wa-l-akwar) 19 Commentary on the Tadhkira of Nasir al-Din al-Tusi 20 Astrolabes 21 Islamic Technology 22 Abbasid Caliph, Ma’mum at the Hammam 23 European Collections European Science of the Middle Ages 24 4 European Technology: On Military Matters (De Re Militari) 25 European Technology: Concerning Military Matters (De Re Militari) 26 Mining Technology: On the Nature of Metals (De Re Metallica) 27 Fireworks: The triumphal -
BABYLONIAN ASTRONOMY* by W.M. O'neil Though the Modern Western
o BABYLONIAN ASTRONOMY* By W.M. O'Neil Though the modern western world had heard of the Chaldaeans in the Old Testament as soothsayers and astrologers and students of Hellenistic astronomy knew of references to Babylonian observations of eclipses and the like, it is only during the last three quarters of a century but especially during the last half century that modern scholars, following the decipherment of the cuneiform writing on clay tablets, have begun to reveal the richness of Babylonian astronomy. They have, however, a long way yet to go. First, only a fraction of the materials scattered throughout the western world have been studied and interpreted. Fragments of the one tablet are sometimes in different museums; this adds to the difficulty. Second, the materials are usually fragmentary: a few pages torn from a book as it were or even only a few parts of pages (See Plate 1). Otto Neugebauer, perhaps the greatest scholar recently working on Babylonian astronomy, says that it is impossible yet to write an adequate history of Babylonian astronomy and suggests that it may never be possible. How many of the needed basic texts have crumbled into dust after acquisition by small museums unable to give them the needed care? , how many are lying unstudied in the multitudinous collections in the Middle East, in Europe and in North America? or are still lying in the ground?, are questions to which the answers are unknown. Nevertheless, through the work of Neugebauer, his predecessors and younger scholars taking over from him, some outlines of the history and the methods of Babylonian astronomy are becoming clearer. -
Thinking Outside the Sphere Views of the Stars from Aristotle to Herschel Thinking Outside the Sphere
Thinking Outside the Sphere Views of the Stars from Aristotle to Herschel Thinking Outside the Sphere A Constellation of Rare Books from the History of Science Collection The exhibition was made possible by generous support from Mr. & Mrs. James B. Hebenstreit and Mrs. Lathrop M. Gates. CATALOG OF THE EXHIBITION Linda Hall Library Linda Hall Library of Science, Engineering and Technology Cynthia J. Rogers, Curator 5109 Cherry Street Kansas City MO 64110 1 Thinking Outside the Sphere is held in copyright by the Linda Hall Library, 2010, and any reproduction of text or images requires permission. The Linda Hall Library is an independently funded library devoted to science, engineering and technology which is used extensively by The exhibition opened at the Linda Hall Library April 22 and closed companies, academic institutions and individuals throughout the world. September 18, 2010. The Library was established by the wills of Herbert and Linda Hall and opened in 1946. It is located on a 14 acre arboretum in Kansas City, Missouri, the site of the former home of Herbert and Linda Hall. Sources of images on preliminary pages: Page 1, cover left: Peter Apian. Cosmographia, 1550. We invite you to visit the Library or our website at www.lindahlll.org. Page 1, right: Camille Flammarion. L'atmosphère météorologie populaire, 1888. Page 3, Table of contents: Leonhard Euler. Theoria motuum planetarum et cometarum, 1744. 2 Table of Contents Introduction Section1 The Ancient Universe Section2 The Enduring Earth-Centered System Section3 The Sun Takes -
The Roots of Astronomy
The Roots of Astronomy • Already in the stone and bronze ages, human cultures realized the cyclic nature of motions in the sky. • Monuments dating back to ~ 3000 B.C. show alignments with astronomical significance. • Those monuments were probably used as calendars or even to predict eclipses. Stonehenge • Constructed: 3000 – 1800 B.C. Summer solstice Heelstone • Alignments with locations of sunset, sunrise, moonset and moonrise at summer and winter solstices • Probably used as calendar. Other Examples All Over the World Big Horn Medicine Wheel (Wyoming) Other Examples All Over the World (2) Caracol (Maya culture, approx. A.D. 1000) Ancient Greek Astronomers (1) • Unfortunately, there are no written documents about the significance of stone and bronze age monuments. • First preserved written documents about ancient astronomy are from ancient Greek philosophy. • Greeks tried to understand the motions of the sky and describe them in terms of mathematical (not physical!) models. Ancient Greek Astronomers (2) Models were generally wrong because they were based on wrong “first principles”, believed to be “obvious” and not questioned: 1. Geocentric Universe: Earth at the Center of the Universe. 2. “Perfect Heavens”: Motions of all celestial bodies described by motions involving objects of “perfect” shape, i.e., spheres or circles. Ancient Greek Astronomers (3) • Eudoxus (409 – 356 B.C.): Model of 27 nested spheres • Aristotle (384 – 322 B.C.), major authority of philosophy until the late middle ages: Universe can be divided in 2 parts: 1. Imperfect, -
Geminos and Babylonian Astronomy
Geminos and Babylonian astronomy J. M. Steele Introduction Geminos’ Introduction to the Phenomena is one of several introductions to astronomy written by Greek and Latin authors during the last couple of centuries bc and the first few centuries ad.1 Geminos’ work is unusual, however, in including some fairly detailed—and accurate—technical information about Babylonian astronomy, some of which is explicitly attributed to the “Chal- deans.” Indeed, before the rediscovery of cuneiform sources in the nineteenth century, Gem- inos provided the most detailed information on Babylonian astronomy available, aside from the reports of several eclipse and planetary observations quoted by Ptolemy in the Almagest. Early-modern histories of astronomy, those that did not simply quote fantastical accounts of pre-Greek astronomy based upon the Bible and Josephus, relied heavily upon Geminos for their discussion of Babylonian (or “Chaldean”) astronomy.2 What can be learnt of Babylonian astron- omy from Geminos is, of course, extremely limited and restricted to those topics which have a place in an introduction to astronomy as this discipline was understood in the Greek world. Thus, aspects of Babylonian astronomy which relate to the celestial sphere (e.g. the zodiac and the ris- ing times of the ecliptic), the luni-solar calendar (e.g. intercalation and the 19-year (“Metonic”) cycle), and lunar motion, are included, but Geminos tells us nothing about Babylonian planetary theory (the planets are only touched upon briefly by Geminos), predictive astronomy that uses planetary and lunar periods, observational astronomy, or the problem of lunar visibility, which formed major parts of Babylonian astronomical practice. -
Max Planck Institute for the History of Science Aristotle And
MAX-PLANCK-INSTITUT FÜR WISSENSCHAFTSGESCHICHTE Max Planck Institute for the History of Science 2012 PREPRINT 422 TOPOI – Towards a Historical Epistemology of Space Pietro Daniel Omodeo, Irina Tupikova Aristotle and Ptolemy on Geocentrism: Diverging Argumentative Strategies and Epistemologies TOPOI – TOWARDS A HISTORICAL EPISTEMOLOGY OF SPACE The TOPOI project cluster of excellence brings together researchers who investigate the formation and transformation of space and knowledge in ancient civilizations and their later developments. The present preprint series presents the work of members and fellows of the research group Historical Epistemology of Space which is part of the TOPOI cluster. The group is based on a cooperation between the Humboldt University and the Max Planck Institute for the History of Science in Berlin and commenced work in September 2008. Contents 1 Introduction 1 2 Aristotle 5 2.1 Aristotle’s confrontation with the cosmologies of his prede- cessors . 6 2.2 Aristotle’s presentation of his own views . 9 3 Ptolemy 15 3.1 The heavens move like a sphere . 16 3.2 The Earth, taken as a whole, is sensibly spherical . 24 3.3 The Earth is in the middle of the heavens . 24 3.4 The Earth has the ratio of a point to the heavens . 32 3.5 The Earth does not have any motion from place to place . 33 4 Conclusions and perspectives 37 Chapter 1 Introduction This paper aims at a comparison of the different argumentative strategies employed by Aristotle and Ptolemy in their approaches to geocentrism through an analysis of their discussion of the centrality of the Earth in De caelo II, 13-14 and Almagest, I, 3-7. -
Nicolaus Copernicus: the Loss of Centrality
I Nicolaus Copernicus: The Loss of Centrality The mathematician who studies the motions of the stars is surely like a blind man who, with only a staff to guide him, must make a great, endless, hazardous journey that winds through innumerable desolate places. [Rheticus, Narratio Prima (1540), 163] 1 Ptolemy and Copernicus The German playwright Bertold Brecht wrote his play Life of Galileo in exile in 1938–9. It was first performed in Zurich in 1943. In Brecht’s play two worldviews collide. There is the geocentric worldview, which holds that the Earth is at the center of a closed universe. Among its many proponents were Aristotle (384–322 BC), Ptolemy (AD 85–165), and Martin Luther (1483–1546). Opposed to geocentrism is the heliocentric worldview. Heliocentrism teaches that the sun occupies the center of an open universe. Among its many proponents were Copernicus (1473–1543), Kepler (1571–1630), Galileo (1564–1642), and Newton (1643–1727). In Act One the Italian mathematician and physicist Galileo Galilei shows his assistant Andrea a model of the Ptolemaic system. In the middle sits the Earth, sur- rounded by eight rings. The rings represent the crystal spheres, which carry the planets and the fixed stars. Galileo scowls at this model. “Yes, walls and spheres and immobility,” he complains. “For two thousand years people have believed that the sun and all the stars of heaven rotate around mankind.” And everybody believed that “they were sitting motionless inside this crystal sphere.” The Earth was motionless, everything else rotated around it. “But now we are breaking out of it,” Galileo assures his assistant.