Cephid Variables and the Size of Latin American Physics
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Glossary Glossary
Glossary Glossary Albedo A measure of an object’s reflectivity. A pure white reflecting surface has an albedo of 1.0 (100%). A pitch-black, nonreflecting surface has an albedo of 0.0. The Moon is a fairly dark object with a combined albedo of 0.07 (reflecting 7% of the sunlight that falls upon it). The albedo range of the lunar maria is between 0.05 and 0.08. The brighter highlands have an albedo range from 0.09 to 0.15. Anorthosite Rocks rich in the mineral feldspar, making up much of the Moon’s bright highland regions. Aperture The diameter of a telescope’s objective lens or primary mirror. Apogee The point in the Moon’s orbit where it is furthest from the Earth. At apogee, the Moon can reach a maximum distance of 406,700 km from the Earth. Apollo The manned lunar program of the United States. Between July 1969 and December 1972, six Apollo missions landed on the Moon, allowing a total of 12 astronauts to explore its surface. Asteroid A minor planet. A large solid body of rock in orbit around the Sun. Banded crater A crater that displays dusky linear tracts on its inner walls and/or floor. 250 Basalt A dark, fine-grained volcanic rock, low in silicon, with a low viscosity. Basaltic material fills many of the Moon’s major basins, especially on the near side. Glossary Basin A very large circular impact structure (usually comprising multiple concentric rings) that usually displays some degree of flooding with lava. The largest and most conspicuous lava- flooded basins on the Moon are found on the near side, and most are filled to their outer edges with mare basalts. -
Special Catalogue Milestones of Lunar Mapping and Photography Four Centuries of Selenography on the Occasion of the 50Th Anniversary of Apollo 11 Moon Landing
Special Catalogue Milestones of Lunar Mapping and Photography Four Centuries of Selenography On the occasion of the 50th anniversary of Apollo 11 moon landing Please note: A specific item in this catalogue may be sold or is on hold if the provided link to our online inventory (by clicking on the blue-highlighted author name) doesn't work! Milestones of Science Books phone +49 (0) 177 – 2 41 0006 www.milestone-books.de [email protected] Member of ILAB and VDA Catalogue 07-2019 Copyright © 2019 Milestones of Science Books. All rights reserved Page 2 of 71 Authors in Chronological Order Author Year No. Author Year No. BIRT, William 1869 7 SCHEINER, Christoph 1614 72 PROCTOR, Richard 1873 66 WILKINS, John 1640 87 NASMYTH, James 1874 58, 59, 60, 61 SCHYRLEUS DE RHEITA, Anton 1645 77 NEISON, Edmund 1876 62, 63 HEVELIUS, Johannes 1647 29 LOHRMANN, Wilhelm 1878 42, 43, 44 RICCIOLI, Giambattista 1651 67 SCHMIDT, Johann 1878 75 GALILEI, Galileo 1653 22 WEINEK, Ladislaus 1885 84 KIRCHER, Athanasius 1660 31 PRINZ, Wilhelm 1894 65 CHERUBIN D'ORLEANS, Capuchin 1671 8 ELGER, Thomas Gwyn 1895 15 EIMMART, Georg Christoph 1696 14 FAUTH, Philipp 1895 17 KEILL, John 1718 30 KRIEGER, Johann 1898 33 BIANCHINI, Francesco 1728 6 LOEWY, Maurice 1899 39, 40 DOPPELMAYR, Johann Gabriel 1730 11 FRANZ, Julius Heinrich 1901 21 MAUPERTUIS, Pierre Louis 1741 50 PICKERING, William 1904 64 WOLFF, Christian von 1747 88 FAUTH, Philipp 1907 18 CLAIRAUT, Alexis-Claude 1765 9 GOODACRE, Walter 1910 23 MAYER, Johann Tobias 1770 51 KRIEGER, Johann 1912 34 SAVOY, Gaspare 1770 71 LE MORVAN, Charles 1914 37 EULER, Leonhard 1772 16 WEGENER, Alfred 1921 83 MAYER, Johann Tobias 1775 52 GOODACRE, Walter 1931 24 SCHRÖTER, Johann Hieronymus 1791 76 FAUTH, Philipp 1932 19 GRUITHUISEN, Franz von Paula 1825 25 WILKINS, Hugh Percy 1937 86 LOHRMANN, Wilhelm Gotthelf 1824 41 USSR ACADEMY 1959 1 BEER, Wilhelm 1834 4 ARTHUR, David 1960 3 BEER, Wilhelm 1837 5 HACKMAN, Robert 1960 27 MÄDLER, Johann Heinrich 1837 49 KUIPER Gerard P. -
Lunar Distances Final
A (NOT SO) BRIEF HISTORY OF LUNAR DISTANCES: LUNAR LONGITUDE DETERMINATION AT SEA BEFORE THE CHRONOMETER Richard de Grijs Department of Physics and Astronomy, Macquarie University, Balaclava Road, Sydney, NSW 2109, Australia Email: [email protected] Abstract: Longitude determination at sea gained increasing commercial importance in the late Middle Ages, spawned by a commensurate increase in long-distance merchant shipping activity. Prior to the successful development of an accurate marine timepiece in the late-eighteenth century, marine navigators relied predominantly on the Moon for their time and longitude determinations. Lunar eclipses had been used for relative position determinations since Antiquity, but their rare occurrences precludes their routine use as reliable way markers. Measuring lunar distances, using the projected positions on the sky of the Moon and bright reference objects—the Sun or one or more bright stars—became the method of choice. It gained in profile and importance through the British Board of Longitude’s endorsement in 1765 of the establishment of a Nautical Almanac. Numerous ‘projectors’ jumped onto the bandwagon, leading to a proliferation of lunar ephemeris tables. Chronometers became both more affordable and more commonplace by the mid-nineteenth century, signaling the beginning of the end for the lunar distance method as a means to determine one’s longitude at sea. Keywords: lunar eclipses, lunar distance method, longitude determination, almanacs, ephemeris tables 1 THE MOON AS A RELIABLE GUIDE FOR NAVIGATION As European nations increasingly ventured beyond their home waters from the late Middle Ages onwards, developing the means to determine one’s position at sea, out of view of familiar shorelines, became an increasingly pressing problem. -
Communications of the LUNAR and PLANETARY LABORATORY
Communications of the LUNAR AND PLANETARY LABORATORY Number 70 Volume 5 Part 1 THE UNIVERSITY OF ARIZONA 1966 Communications of the Lunar and Planetary Laboratory These Communications contain the shorter publications and reports by the staff of the Lunar and Planetary Laboratory. They may be either original contributions, reprints of articles published in professional journals, preliminary reports, or announcements. Tabular material too bulky or specialized for regular journals is included if future use of such material appears to warrant it. The Communications are issued as separate numbers, but they are paged and indexed by volumes. The Communications are mailed to observatories and to laboratories known to be engaged in planetary, interplanetary or geophysical research in exchange for their reports and publica- tions. The University of Arizona Press can supply at cost copies to other libraries and interested persons. The University of Arizona GERARD P. KUIPER, Director Tucson, Arizona Lunar and Planetary Laboratory Published with the support of the National Aeronautics and Space Administration Library of Congress Catalog Number 62-63619 NO. 70 THE SYSTEM OF LUNAR CRATERS, QUADRANT IV by D. W. G. ARTHUR, RUTH H. PELLICORI, AND C. A. WOOD May25,1966 , ABSTRACT The designation, diameter, position, central peak information, and state of completeness are listed for each discernible crater with a diameter exceeding 3.5 km in the fourth lunar quadrant. The catalog contains about 8,000 items and is illustrated by a map in 11 sections. hiS Communication is the fourth and final part of listed in the catalog nor shown in the accompanying e System of Lunar Craters, which is a_calalag maps. -
IAU Information Bulletin No. 104
CONTENTS IAU Information Bulletin No. 104 Preface ..................................................................................................................... 4 1. EVENTS & DEADLINES ............................................................ 5 2. REMINISCENCES OF PAST IAU PRESIDENTS ............... 7 2.1. Adriaan Blaauw, 18th IAU President, 1976 - 1979 ............................ 7 2.2. Jorge Sahade, 21st IAU President, 1985 - 1988 .............................. 10 2.3. Yoshihide Kozai, 22nd IAU President, 1988 - 1991 ....................... 12 2.4. Lodewijk Woltjer, 24th President, 1994 - 1997 ................................. 14 2.5. Robert P. Kraft, 25th IAU President, 1997 - 2000 .......................... 15 2.6. Franco Pacini, 26th President, 2000 - 2003 ...................................... 16 3. IAU EXECUTIVE COMMITTEE 3.1. Officers’ Meeting 2009-1, Paris, France, 6 April 2009 .................... 18 3.2. 85th Executive Committee Meeting, Paris, France, 7 - 8 April 2009 18 4. THE EC WORKING GROUP ON THE INTERNATIONAL YEAR OF ASTRONOMY 2009 4.1. Status report ......................................................................................... 20 5. IAU GENERAL ASSEMBLIES 5.1. IAU XXVII General Assembly, 3-14 August 2009, Rio de .......... 24 Janeiro, Brazil 5.1.1. Inaugural Ceremony, First Session, Second Session and ................. 24 Closing Ceremony 5.1.2. Proposal for modification of Statutes and Bye-Laws ....................... 27 5.1.2.1 Proposal for modification of Statutes ............................................... -
Historical Overview of the Universe - Hartmut Schulz
EARTH SYSTEM: HISTORY AND NATURAL VARIABILITY - Vol. I - Historical Overview of the Universe - Hartmut Schulz HISTORICAL OVERVIEW OF THE UNIVERSE Hartmut Schulz Astronomical Institute, Ruhr University, D-44780 Bochum, Germany Keywords: Cosmology, world models, history of astronomy, fixed stars, constellations, ecliptic, epicycles, Almagest, astrology, ephemerides, supernova, comet, planet, orbit, eccentricity, principle of inertia, longitude, velocity of light, asteroids, galaxy, spectroscopy, spectral line, absolute brightness, luminosity, nuclear energy source, white dwarf, globular cluster, distance indicator, Hubble constant, black body, chemical abundance, quasistellar object, black hole, expansion of the Universe, cosmological principle, big bang, dark matter, antimatter, annihilation, nucleosynthesis, recombination epoch, cosmic microwave background radiation, density contrast, nuclear burning, galaxy formation, planetary systems, planetesimal. Contents 1. Introduction to the Sciences of the Universe 2. History of Astronomy 2.1 Antique Astronomy 2.2 The Middle Ages (600 to 1500) 2.3 The Evolution of Newtonian Physics (1500 to 1800) 2.4 Beyond the Solar System (the Nineteenth Century) and the Birth of Astrophysics 2.5 Stars and Nebulae in the Twentieth Century 2.6 Galaxies and Observational Cosmology in the Twentieth Century 2.7 Theoretical World Models of the twentieth Century 3. How the World has Evolved after the Big Bang 3.1 Big Bang, Inflation, Hadron Era, and Lepton Era 3.2 Light-Element Nucleosynthesis 3.3 Matter Era and Recombination Epoch 3.4 Growth of Structures and Formation of First Objects 3.5 Observed Evolution of Galaxies 3.6 Formation of the Solar System 4. Entering the 21st Century Glossary UNESCO – EOLSS Bibliography Biographical Sketch Summary SAMPLE CHAPTERS The core of this article consists of two parts. -
Rotational Dynamics of Europa 119
Bills et al.: Rotational Dynamics of Europa 119 Rotational Dynamics of Europa Bruce G. Bills NASA Goddard Space Flight Center and Scripps Institution of Oceanography Francis Nimmo University of California, Santa Cruz Özgür Karatekin, Tim Van Hoolst, and Nicolas Rambaux Royal Observatory of Belgium Benjamin Levrard Institut de Mécanique Céleste et de Calcul des Ephémérides and Ecole Normale Superieure de Lyon Jacques Laskar Institut de Mécanique Céleste et de Calcul des Ephémérides The rotational state of Europa is only rather poorly constrained at present. It is known to rotate about an axis that is nearly perpendicular to the orbit plane, at a rate that is nearly constant and approximates the mean orbital rate. Small departures from a constant rotation rate and os- cillations of the rotation axis both lead to stresses that may influence the location and orienta- tion of surface tectonic features. However, at present geological evidence for either of these processes is disputed. We describe a variety of issues that future geodetic observations will likely resolve, including variations in the rate and direction of rotation, on a wide range of timescales. Since the external perturbations causing these changes are generally well known, observations of the amplitude and phase of the responses will provide important information about the internal structure of Europa. We focus on three aspects of the rotational dynamics: obliquity, forced librations, and possible small departures from a synchronous rotation rate. Europa’s obliquity should be nonzero, while the rotation rate is likely to be synchronous unless lateral shell thickness variations occur. The tectonic consequences of a nonzero obliquity and true polar wander have yet to be thoroughly investigated. -
Irregular Satellites of the Giant Planets 411
Nicholson et al.: Irregular Satellites of the Giant Planets 411 Irregular Satellites of the Giant Planets Philip D. Nicholson Cornell University Matija Cuk University of British Columbia Scott S. Sheppard Carnegie Institution of Washington David Nesvorný Southwest Research Institute Torrence V. Johnson Jet Propulsion Laboratory The irregular satellites of the outer planets, whose population now numbers over 100, are likely to have been captured from heliocentric orbit during the early period of solar system history. They may thus constitute an intact sample of the planetesimals that accreted to form the cores of the jovian planets. Ranging in diameter from ~2 km to over 300 km, these bodies overlap the lower end of the presently known population of transneptunian objects (TNOs). Their size distributions, however, appear to be significantly shallower than that of TNOs of comparable size, suggesting either collisional evolution or a size-dependent capture probability. Several tight orbital groupings at Jupiter, supported by similarities in color, attest to a common origin followed by collisional disruption, akin to that of asteroid families. But with the limited data available to date, this does not appear to be the case at Uranus or Neptune, while the situa- tion at Saturn is unclear. Very limited spectral evidence suggests an origin of the jovian irregu- lars in the outer asteroid belt, but Saturn’s Phoebe and Neptune’s Nereid have surfaces domi- nated by water ice, suggesting an outer solar system origin. The short-term dynamics of many of the irregular satellites are dominated by large-amplitude coupled oscillations in eccentricity and inclination and offer several novel features, including secular resonances. -
The Interior of Enceladus
Hemingway D., Iess L., Tajeddine R., and Tobie G. (2018) The interior of Enceladus. In Enceladus and the Icy Moons of Saturn (P. M. Schenk et al., eds.), pp. 57–77. Univ. of Arizona, Tucson, DOI: 10.2458/azu_uapress_9780816537075-ch004. The Interior of Enceladus Douglas Hemingway University of California, Berkeley Luciano Iess Università La Sapienza, Rome Radwan Tajeddine Cornell University Gabriel Tobie Université de Nantes Knowledge of internal structure places constraints on the origin, evolution, and present behavior of Enceladus. Although the interior cannot be observed directly, much can be de- duced from the magnitude of tidal and rotational asymmetries in the shape and gravity field and from how these asymmetries affect the rotational dynamics. The data and models suggest a differentiated interior consisting of a ~2400 kg m–3 rocky core, a 20–50-km mean thickness global subsurface liquid water ocean, and a 20–30-km mean thickness icy shell. The presence of an internal liquid water reservoir had been suggested by a series of observations early in the Cassini mission and was ultimately confirmed by two crucial and independent analyses related to (1) determination of Enceladus’ low-order gravity field based on Doppler tracking of the Cassini spacecraft during dedicated flybys and (2) measurement of forced physical librations based on control point tracking through seven years of Cassini images. Although Cassini-based observations have yielded a good, basic picture of the interior of Enceladus, many unresolved issues remain — in particular, relating to the structure and stability of the icy shell and related implications for the energy budget and thermal evolution of Enceladus — and will need to be addressed through further modeling and, eventually, additional observations. -
Griffith Observer Cumulative Index
Griffith Observer Cumulative Index author title mo year key words Anonymous The Romance of the Calendar 2 1937 calendar, Julian, Gregorian Anonymous Other Worlds than Ours 3 1937 Planets, Solar System Anonymous The S ola r Fa mily 3 1937 Planets, Solar System Roya l Elliott Behind the Sciences 3 1937 GO, pla ne ta rium, e xhibits , Ge ologica l Clock Anonymous The Stars of Spring 4 1937 Cons te lla tions , S ta rs , Anonymous Pronunciation of Star and 4 1937 Cons te lla tions , S ta rs Constellation Names Anonymous The Cycle of the Seasons 5 1937 Seasons, climate Anonymous The Ice Ages 5 1937 United States, Climate, Greenhouse Gases, Volcano, Ice Age Anonymous New Meteorites at the Griffith 5 1937 Meteorites Observatory Anonymous Conditions of Eclipse 6 1937 Solar eclipse, June 8, Occurrences 1937, Umbra, Sun, Moon Anonymous Ancient and Modern Eclipse 6 1937 Chinese, Observation, Observations Eclips e , Re la tivity Anonymous The Sky as Seen from 6 1937 Stars, Celestial Sphere, Different Latitudes Equator, Pole, Latitude Anonymous Laws of Polar Motion 6 1937 Pole, Equator, Latitude Anonymous The Polar Aurora 7 1937 Northern lights, Aurora Anonymous The Astrorama 7 1937 Star map, Planisphere, Astrorama Anonymous The Life Story of the Moon 8 1937 Moon, Earth's rotation, Darwin Anonymous Conditions on the Moon 8 1937 Moon, Temperature, Anonymous The New Comet 8 1937 Come t Fins le r Anonymous Comets 9 1937 Halley's Comet, Meteor Anonymous Meteors 9 1937 Meteor Crater, Shower, Leonids Anonymous Comet Orbits 9 1937 Comets, Encke Anonymous -
When Computers Were Human
When Computers Were Human When Computers Were Human David Alan Grier princeton university press princeton and oxford Copyright © 2005 by Princeton University Press Published by Princeton University Press, 41 William Street, Princeton, New Jersey 08540 In the United Kingdom: Princeton University Press, 3 Market Place, Woodstock, Oxfordshire OX20 1SY All Rights Reserved Third printing, and first paperback printing, 2007 Paperback ISBN: 978-0-691-13382-9 The Library of Congress has cataloged the cloth edition of this book as follows Grier, David Alan, 1955 Feb. 14– When computers were human / David Alan Grier. p. cm. Includes bibliographical references. ISBN 0-691-09157-9 (acid-free paper) 1. Calculus—History. 2. Science—Mathematics—History. I. Title. QA303.2.G75 2005 510.922—dc22 2004022631 British Library Cataloging-in-Publication Data is available This book has been composed in Sabon Printed on acid-free paper. ∞ press.princeton.edu Printed in the United States of America 109876543 FOR JEAN Who took my people to be her people and my stories to be her own without realizing that she would have to accept a comet, the WPA, and the oft-told tale of a forgotten grandmother Contents Introduction A Grandmother’s Secret Life 1 Part I: Astronomy and the Division of Labor 9 1682–1880 Chapter One The First Anticipated Return: Halley’s Comet 1758 11 Chapter Two The Children of Adam Smith 26 Chapter Three The Celestial Factory: Halley’s Comet 1835 46 Chapter Four The American Prime Meridian 55 Chapter Five A Carpet for the Computing Room 72 Part II: -
Some Milestones in History of Science About 10,000 Bce, Wolves Were Probably Domesticated
Some Milestones in History of Science About 10,000 bce, wolves were probably domesticated. By 9000 bce, sheep were probably domesticated in the Middle East. About 7000 bce, there was probably an hallucinagenic mushroom, or 'soma,' cult in the Tassili-n- Ajjer Plateau in the Sahara (McKenna 1992:98-137). By 7000 bce, wheat was domesticated in Mesopotamia. The intoxicating effect of leaven on cereal dough and of warm places on sweet fruits and honey was noticed before men could write. By 6500 bce, goats were domesticated. "These herd animals only gradually revealed their full utility-- sheep developing their woolly fleece over time during the Neolithic, and goats and cows awaiting the spread of lactose tolerance among adult humans and the invention of more digestible dairy products like yogurt and cheese" (O'Connell 2002:19). Between 6250 and 5400 bce at Çatal Hüyük, Turkey, maces, weapons used exclusively against human beings, were being assembled. Also, found were baked clay sling balls, likely a shepherd's weapon of choice (O'Connell 2002:25). About 5500 bce, there was a "sudden proliferation of walled communities" (O'Connell 2002:27). About 4800 bce, there is evidence of astronomical calendar stones on the Nabta plateau, near the Sudanese border in Egypt. A parade of six megaliths mark the position where Sirius, the bright 'Morning Star,' would have risen at the spring solstice. Nearby are other aligned megaliths and a stone circle, perhaps from somewhat later. About 4000 bce, horses were being ridden on the Eurasian steppe by the people of the Sredni Stog culture (Anthony et al.