Thumbnail History of the Time Clock
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
The Dunhuang Chinese Sky: a Comprehensive Study of the Oldest Known Star Atlas
25/02/09JAHH/v4 1 THE DUNHUANG CHINESE SKY: A COMPREHENSIVE STUDY OF THE OLDEST KNOWN STAR ATLAS JEAN-MARC BONNET-BIDAUD Commissariat à l’Energie Atomique ,Centre de Saclay, F-91191 Gif-sur-Yvette, France E-mail: [email protected] FRANÇOISE PRADERIE Observatoire de Paris, 61 Avenue de l’Observatoire, F- 75014 Paris, France E-mail: [email protected] and SUSAN WHITFIELD The British Library, 96 Euston Road, London NW1 2DB, UK E-mail: [email protected] Abstract: This paper presents an analysis of the star atlas included in the medieval Chinese manuscript (Or.8210/S.3326), discovered in 1907 by the archaeologist Aurel Stein at the Silk Road town of Dunhuang and now held in the British Library. Although partially studied by a few Chinese scholars, it has never been fully displayed and discussed in the Western world. This set of sky maps (12 hour angle maps in quasi-cylindrical projection and a circumpolar map in azimuthal projection), displaying the full sky visible from the Northern hemisphere, is up to now the oldest complete preserved star atlas from any civilisation. It is also the first known pictorial representation of the quasi-totality of the Chinese constellations. This paper describes the history of the physical object – a roll of thin paper drawn with ink. We analyse the stellar content of each map (1339 stars, 257 asterisms) and the texts associated with the maps. We establish the precision with which the maps are drawn (1.5 to 4° for the brightest stars) and examine the type of projections used. -
Breguet: Art and Innovation in Watchmaking Pdf, Epub, Ebook
BREGUET: ART AND INNOVATION IN WATCHMAKING PDF, EPUB, EBOOK Emmanuel Breguet | 176 pages | 25 Oct 2015 | PRESTEL | 9783791354675 | English | Munich, Germany Breguet: Art and Innovation in Watchmaking PDF Book This thrilling book explores the role of cabarets, clubs, and cafes in modern art. In addition, he invented the first travel clock, sold to Napoleon Bonaparte in , and the first wristwatch, delivered to Caroline Murat, queen of Naples in A replica of perhaps his most famous piece, the Marie Antoinette watch hands-on article here , is also on display as part of the exhibit. See details. For more information, please also refer to our Cookie Notice. A colored button indicates if the cookies are active blue , or inactive grey. For many decades in the early history of watchmaking, both winding and setting were done with a key, which came with risks — inserting a key into the watch movement increased the risk of contamination as well as accidental damage, for instance. From jewelry designers to scientists, graphic artists to naturalists, Engaging essays explore Breguet's personal history, the technologies he perfected, and his vast international reputation--which survives to this day. If the Breguet no. Related Searches. Hayek, honor its th anniversary with a milestone—the largest exhibition of Breguet timepieces ever to be shown in the American continent. The story of modern art begins with a revolution—when the realists started Filled with vibrant examples of painting, photography, sculpture, video, and other media, this book reveals how Iran's leading artists weave the country's past into the fabric of its contemporary art. -
On the Isochronism of Galilei's Horologium
IFToMM Workshop on History of MMS – Palermo 2013 On the isochronism of Galilei's horologium Francesco Sorge, Marco Cammalleri, Giuseppe Genchi DICGIM, Università di Palermo, [email protected], [email protected], [email protected] Abstract − Measuring the passage of time has always fascinated the humankind throughout the centuries. It is amazing how the general architecture of clocks has remained almost unchanged in practice to date from the Middle Ages. However, the foremost mechanical developments in clock-making date from the seventeenth century, when the discovery of the isochronism laws of pendular motion by Galilei and Huygens permitted a higher degree of accuracy in the time measure. Keywords: Time Measure, Pendulum, Isochronism Brief Survey on the Art of Clock-Making The first elements of temporal and spatial cognition among the primitive societies were associated with the course of natural events. In practice, the starry heaven played the role of the first huge clock of mankind. According to the philosopher Macrobius (4 th century), even the Latin term hora derives, through the Greek word ‘ώρα , from an Egyptian hieroglyph to be pronounced Heru or Horu , which was Latinized into Horus and was the name of the Egyptian deity of the sun and the sky, who was the son of Osiris and was often represented as a hawk, prince of the sky. Later on, the measure of time began to assume a rudimentary technical connotation and to benefit from the use of more or less ingenious devices. Various kinds of clocks developed to relatively high levels of accuracy through the Egyptian, Assyrian, Greek and Roman civilizations. -
The Evolution of Tower Clock Movements and Their Design Over the Past 1000 Years
The Evolution Of Tower Clock Movements And Their Design Over The Past 1000 Years Mark Frank Copyright 2013 The Evolution Of Tower Clock Movements And Their Design Over The Past 1000 Years TABLE OF CONTENTS Introduction and General Overview Pre-History ............................................................................................... 1. 10th through 11th Centuries ........................................................................ 2. 12th through 15th Centuries ........................................................................ 4. 16th through 17th Centuries ........................................................................ 5. The catastrophic accident of Big Ben ........................................................ 6. 18th through 19th Centuries ........................................................................ 7. 20th Century .............................................................................................. 9. Tower Clock Frame Styles ................................................................................... 11. Doorframe and Field Gate ......................................................................... 11. Birdcage, End-To-End .............................................................................. 12. Birdcage, Side-By-Side ............................................................................. 12. Strap, Posted ............................................................................................ 13. Chair Frame ............................................................................................. -
Time for a Change?
TIME FOR A CHANGE? Raymond H.V. Gallucci, PhD., P.E.; Frederick, Maryland, USA [email protected] ABSTRACT This work was inspired by Hughes’ book The Binary Universe, which proposes a unique theory about the nature of time and its dominance over phenomena since as gravity and electromagnetic radiation. While Hughes treats time as variable and time dilation as a real phenomenon, I divert while retaining much of Hughes’ proposals to speculate that time is immutable and equivalent to change, albeit progressing at a fixed rate analogous to the fastest proposed by Hughes – the Planck time interval. Keywords: Time (dilation), Planck time, absolute zero, zero point energy, kinetic energy, Bohr hydrogen atom 1. INTRODUCTION In his book The Binary Universe, Hughes strives “to provide a more accurate, simpler and realistic view of relativity and to encourage QM [Quantum Mechanics] physicists to review and re-assess the relationship between QM and the Special and General [Relativity] theories. The book focuses firstly on the macro universe and takes a logical, deductive approach to investigating the nature of space-time and gravity … [W]e focus down to the quantum scale and an in-depth analysis of the nature of time itself is presented … I offer here an alternative theory for gravitation … Finally, … I present the inevitable conclusions about the nature of time and of the universe itself from the Planck scale upwards …” [1] I find much with which to agree in Hughes’ theories, in particular, the following: Time is independent of the physical void since there is no known cause or effect, or suggested mechanism that links the two … Quantum Mechanical Theory recognizes that there is more to the vacuum than simply empty void … Space, the void (or volume), or anything within the void, cannot “exist” without the passage of time. -
In the Stores of the British Museum Are Three Exquisite Springs, Made in the Late 1820S and 1830S, to Regulate the Most Precise Timepieces in the World
1 Riotous assemblage and the materials of regulation Abstract: In the stores of the British Museum are three exquisite springs, made in the late 1820s and 1830s, to regulate the most precise timepieces in the world. Barely the thickness of a hair, they are exquisite because they are made entirely of glass. Combining new documentary evidence, funded by the Antiquarian Horological Society, with the first technical analysis of the springs, undertaken in collaboration with the British Museum, the research presented here uncovers their extraordinary significance to the global extension of nineteenth century capitalism through the repeal of the Corn Laws. In the 1830s and 1840s the Astronomer Royal, George Biddell Airy; the Hydrographer to the Admiralty, Francis Beaufort; and the Prime Minister, Sir Robert Peel, collaborated with the virtuoso chronometer-maker, Edward John Dent, to mobilize the specificity of particular forms of glass, the salience of the Glass Tax, and the significance of state standards, as means to reform. These protagonists looked to glass and its properties to transform the fiscal military state into an exquisitely regulated machine with the appearance of automation and the gloss of the free-trade liberal ideal. Surprising but significant connexions, linking Newcastle mobs to tales of Cinderella and the use of small change, demonstrate why historians must attend to materials and how such attention exposes claims to knowledge, the interests behind such claims, and the impact they have had upon the design and architecture of the modern world. Through the pivotal role of glass, this paper reveals the entangled emergence of state and market capitalism, and how the means of production was transformed in vitreous proportions. -
Empty Cloud, the Autobiography of the Chinese Zen Master Xu
EMPTY CLOUD The Autobiography of the Chinese Zen Master XU YUN TRANSLATED BY CHARLES LUK Revised and Edited by Richard Hunn The Timeless Mind . Undated picture of Xu-yun. Empty Cloud 2 CONTENTS Contents .......................................................................................... 3 Acknowledgements ......................................................................... 4 Introduction .................................................................................... 5 CHAPTER ONE: Early Years ............................................................ 20 CHAPTER TWO: Pilgrimage to Mount Wu-Tai .............................. 35 CHAPTER THREE: The Journey West ............................................. 51 CHAPTER FOUR: Enlightenment and Atonement ......................... 63 CHAPTER FIVE: Interrupted Seclusion .......................................... 75 CHAPTER SIX: Taking the Tripitaka to Ji Zu Shan .......................... 94 CHAPTER SEVEN: Family News ................................................... 113 CHAPTER EIGHT: The Peacemaker .............................................. 122 CHAPTER NINE: The Jade Buddha ............................................... 130 CHAPTER TEN: Abbot At Yun-Xi and Gu-Shan............................. 146 CHAPTER ELEVEN: Nan-Hua Monastery ..................................... 161 CHAPTER TWELVE: Yun-Men Monastery .................................... 180 CHAPTER THIRTEEN: Two Discourses ......................................... 197 CHAPTER FOURTEEN: At the Yo Fo & Zhen Ru Monasteries -
The Moon and Hatfield
THE MOON AND HATFIELD LUNAR PHOTOGRAPHY FROM ENGLAND ACROSS TWO CENTURIES PRESENTED WITH GRATEFUL THANKS TO ................................................................................... EUROPEAN WEEK OF ASTRONOMY & SPACE SCIENCE UNIVERSITY OF HERTFORDSHIRE APRIL 19TH – 25TH 2009 Cover Alice Williamson (after Galileo) Pen and wash sketches of the Moon 2008 – a prop from the film ‘The Starry Messenger’ written by University Research Fellow Robert Priddey and shot in Hatfield and its environs in 2008/9. The film commemorates Galileo’s first telescopic observations in 1609/10. DAVID CAMPBELL A beautiful mosaic of webcam images of the waning gibbous Moon taken by a current University of Hertfordshire undergraduate on the BSc Astrophysics programme In early September 2006, I received a letter from Miss Betty Ewens BEM. She had been asked to sort out various papers from the estate of R. M. Clarkson, formerly Research Director at the de Havilland Aircraft Company which was based in Hatfield for many years. Amongst the papers was a set of photographs of the Moon taken by Clarkson’s uncle - C.C. Walker CBE - when he was a young man. Miss Ewens had watched the University of Hertfordshire team battling to the quarter finals of University Challenge and had noticed two members of the team were studying astrophysics. Deducing that astronomy must be an important subject in the University, she wondered if a donation of the pictures would be welcome and got in touch. The photographs had been printed with rather atmospheric vignettes and as Miss Ewens withdrew each century-old image from the reinforced envelope in which they had been stored, we enjoyed glimpses of the challenge and excitement that must have accompanied early lunar photography. -
Estor-Krasnystaw.Eu ISSN 1898-1801 N4(34) 2015
E S T O R Czasopismo Artystyczne N Rok IX www.nestor-krasnystaw.eu ISSN 1898-1801 N4(34) 2015 fot. Tomasz Tylus Lampy naftowe w zbiorach Muzeum Regionalnego w Krasnymstawie spiętych wiązek roślinnych ujętych w przenikające się wzajemnie wąskie ramy. Przeźroczysty jest również wąski, poziomy pasek powyżej oraz brzeg. Pośrodku Konstruktorem lampy naftowej był polski farmaceuta Ignacy Łukasiewicz. każdego z ornamentów namalowana czerwoną emalią kropka. Motyw powtarza Jej powstanie związane jest z badaniami dążącymi do wytworzenia bardziej się też przy brzegu. Lampa datowana jest na koniec XIX wieku. wydajnego i tańszego paliwa, które zastąpiłoby ówcześnie stosowane oleje czy Ostatnią z trójki jest biała lampa na profilowanej podstawie. Brzeg każ- gaz. Pierwsza tego typu lampa powstała w 1853 roku i stała się, dla całej II dego z profili ozdobiono wąskim paskiem złocenia, zaś górna część podstawy połowy XIX wieku, najczęściej stosowanym rodzajem oświetlenia wnętrz miesz- obwiedziona jest delikatną wicią kwiatowo-liściastą. Korpus w formie wazonu kalnych. zdobią malowane, delikatne, pomarańczowe, różowe oraz białe kwiaty na wą- Pośród niewielkiego zbioru lamp zachowanych w muzeum krasnostaw- skich łodyżkach z liśćmi w odcieniach różu i zieleni. Ponad malunkiem widoczne skim na szczególną uwagę, ze względu przede wszystkim na najlepszy stan jest przewężenie ujęte w mosiężną obręcz w formie półwałka, wyżej korpus ma- zachowania, zasługują trzy lampy naftowe datowane na okres od końca XIX do lowany bladoróżową emalią. Cebulasty, szeroki klosz wykonany został ze szkła początku XX wieku. mlecznego. Lampa datowana jest na przełom XIX i XX wieku. Pierwszą z nich jest lampa w stylu empire, której wazonowata podstawa Wszystkie trzy lampy eksponowane są na stałej wystawie „Rzemiosło arty- ozdobiona została figurkami kariatyd, korpus zaś plakietami i ornamentem akan- styczne XVIII - początku XX wieku”. -
Durham E-Theses
Durham E-Theses Investigation of some astronomical phenomena in medieval Arabic chronicles Al-Trabulsy, Hussain Ali M. How to cite: Al-Trabulsy, Hussain Ali M. (1993) Investigation of some astronomical phenomena in medieval Arabic chronicles, Durham theses, Durham University. Available at Durham E-Theses Online: http://etheses.dur.ac.uk/5691/ Use policy The full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that: • a full bibliographic reference is made to the original source • a link is made to the metadata record in Durham E-Theses • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders. Please consult the full Durham E-Theses policy for further details. Academic Support Oce, Durham University, University Oce, Old Elvet, Durham DH1 3HP e-mail: [email protected] Tel: +44 0191 334 6107 http://etheses.dur.ac.uk 2 INVESTIGATION OF SOME ASTRONOMICAL PHENOMENA IN MEDIEVAL ARABIC CHRONICLES BY Hussain Ali M. al-Trabulsy The copyright of this thesis rests with the author. No quotation from it should be published without his prior written consent and information derived from it should be acknowledged. A thesis submitted to the University of Durham for the degree of Master of science September 1993 1 5 JUN 1994 To My Father, Loving Memory of My Mother And My Wife Um Ali INVESTIGATION OF SOME ASTRONOMICAL PHENOMENA IN MEDIEVAL ARABIC CHRONICLES By Hussain A. -
MS 111 Stanley: Misc
Corpus Christi College Cambridge / PARKER-ON-THE-WEB M.R. James, Descriptive Catalogue of the Manuscripts in the Library of Corpus Christi College, Cambridge 1912 MS 111 Stanley: Misc. G TJames: 316 The Bath Cartulary and related items. Antiquarian Transcripts of Charters Registrum Chartarum Abbatiae Bathoniensis. Apographa Chartarum, etc. Codicology: Vellum and paper, mm 300 x 220, (12 x 8.6 in.), pp. 454. Cent. xi-xvi. Collation: 14 212 36 4 (five leaves) || 58 66 (+ a slip after 2) 78-98 104 (+ 1 paper leaf after 3). The rest of the volume is of paper. Collation: Diagram of quire 4: f. 5 (pp. 7, 8) is of cent. xi. Foliation: pp. a-f + (1-2 missing) + 3-74 + 74a-d +75-138 + 138a-b + 139-226 + 226a-d + 227-382 + 382a-b + 383-410 + 410a + 411a + 411-414 + 415-454 + g-l. Language: Latin and Old English. Contents: 1. 4-4 Homagium factum priori Bathonensi[] pro messuagio Homagium factum priori Bathonensi[] pro messuagio, etc. in Olveston[] per Ioannem de Weston[] [Nasmith:] [manu neoterica] The paging begins with 3: p. 3 blank On p. 4, of cent. xiv (44 Edw. III) 2. 5-5 Ad parcum de Westberi[] claudendum Qui tenentur claudere parcum de Westberi[] Of cent. xii Followed by another copy of 1 3. 6-6 Relic list Reliquiae sanctorum A continuation in another hand of the list of relics 4 (1) It is in Latin, of cent. xiii (?) 4. 7-10 Anglo-Saxon relic lists and manumissions from Bath[] Folium a libro evangeliorum Saxonico, hujus bibliothecae Cod. CXL avulsum, in quo continentur Saxonice [Nasmith:] (1) Scriptum Saxonicum de reliquiis sanctorum quas in scriniis Bathoniensis ecclesiae[] reperierunt Ælsigus abbas[] et fratres ejusdem monasterii. -
Cambridge University Press 978-1-108-41966-6 — the Victorian Palace of Science Edward J
Cambridge University Press 978-1-108-41966-6 — The Victorian Palace of Science Edward J. Gillin Index More Information Index A Geological Manual,94 Albemarle Street, 68 A Preliminary Discourse on the Study of Albert, Prince, 160, 195 Natural philosophy,4 anti slavery, 158 A rudimentary treatise on clock and at the British Association, 68 watchmaking, 245 Michael Faraday, 184 Aberdeen, University of, 29 Alison, Archibald, 50–52 abolition of slavery, 3, 91, 158 on architecture, 51, 52 Acland, Thomas, 198 on Parliament, 51 acoustics, 30, 31, 56, 58, 59, 84, 140, 143 on utility, 52 Adams, Robert, 116, 117 political views, 51 Admiralty, 224 All Saint’s Church, Babbacombe, 120 Airy, George Biddell, 203, 216, 218, 220, All Souls College, Oxford, 95 232, 233, 238, 244, 252, 253, 256, An Introduction to the Study of Chemical 262, 263, 267, 268, 271 Philosophy,99 accuracy, 214, 224, 225, 237 Anderson, John Wilson, 131, 132 as Astronomer Royal, 221–23 Anglican, 6, 244 at Cambridge, 220 architecture, 109 at Greenwich, 216, 217, 221–23, 224, Broad Church, 6 225, 231 Cornwall, 188 authority over Edward John Dent, 250–51 geology, 107 career, 220 governance, 51 compass deviation, 221 High Church, 47, 106 dispute with Benjamin Vulliamy, 234–38 John Frederic Daniell, 99 Edmund Beckett Denison, 216 science, 5 Edward John Dent, 219, 225–26, 237 theology, 4 galvanic regulation, 217 universities, 125 galvanic time system, 227, 228–32, Anning, Mary, 91 238–44, 252, 253, 258 Ansted, David, 266 Greenwich time, 217 Anston stone, 102, 115, 117, 118, 265, Greenwich