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Floating and Platform Balances an Introduction
Floating and Platform Balances An introduction ©Darrah Artzner 3/2018 Floating and Platform Balances • Introduce main types • Discuss each in some detail including part identification and function • Testing and Inspecting • Cleaning tips • Lubrication • Performing repairs Balance Assembly Type Floating Platform Floating Balance Frame Spring stud Helicoid spring Hollow Tube Mounting Post Regulator Balance wheel Floating Balance cont. Jewel Roller Pin Paired weight Hollow Tube Safety Roller Pivot Wire Floating Balance cont. Example Retaining Hermle screws Safety Roller Note: moving fork Jewel cover Floating Balance cont. Inspecting and Testing (Balance assembly is removed from movement) • Inspect pivot (suspension) wire for distortion, corrosion, breakage. • Balance should appear to float between frame. Top and bottom distance. • Balance spring should be proportional and not distorted in any way. • Inspect jewels for cracks and or breakage. • Roller pin should be centered when viewed from front. (beat) • Rotate balance wheel three quarters of a turn (270°) and release. It should rotate smoothly with no distortion and should oscillate for several (3) minutes. Otherwise it needs attention. Floating Balance cont. Cleaning • Make sure the main spring has been let down before working on movement. • Use non-aqueous watch cleaner and/or rinse. • Agitate in cleaner/rinse by hand or briefly in ultrasonic. • Rinse twice and final in naphtha, Coleman fuel (or similar) or alcohol. • Allow to dry. (heat can be used with caution – ask me how I would do it.) Lubrication • There are two opinions. To lube or not to lube. • Place a vary small amount of watch oil on to the upper and lower jewel where the pivot wire passed through the jewel holes. -
Edgar Buckingham: Fluorescence of Quinine Salts
Bull. Hist. Chem., VOLUME 27, Number 1 (2002) 57 EDGAR BUCKINGHAM: FLUORESCENCE OF QUININE SALTS John T. Stock, University of Connecticut Malaria, an often-fatal disease, has been a worldwide factured from cinchona trees that are cultivated in South plague for several thousand years. The discovery of America and in the Far East. the efficacy of substances present in the bark of vari- It must have been known ous cinchona trees, native since ancient times that certain to the Andes, provided substances appear to have one some relief. A real anti- color when viewed by transmit- malarial drug was not ted light and another when available until 1820, when viewed obliquely. Mineralo- Joseph Baptiste Caventou gists recognize a type of fluor- (1795-1877) and Josephe spar, pale green when viewed Pelletier (1788-1842) iso- against the light, but appearing lated quinine from the blue when viewed at an angle bark (1). Eighty years af- to the light. Unrefined petro- ter their discovery, a statue leum shows the same kind of honoring these chemists effect, as do certain substances was erected in Paris (Fig. when in solution. Fluorescein, 1). used both in the laboratory as Other workers estab- an indicator and industrially for lished the formula for qui- the location of leaks in waste nine, showed that it acts as water systems, is a familiar ex- a diacid base, and that it ample. Another is quinine or, is a methoxy derivative of because of its low solubility in a companion alkaloid, cin- water, one of its salts. The so- chonine. The elucidation lution, colorless when viewed of the structure of these directly, appears blue when compounds, largely due to viewed at an angle to the inci- the work of Wilhelm dent light. -
Questions These Questions Are in a Specific Order. 1. What Is Scrabble
Questions Re: The Game of Scrabble Radio Interview - 14th March 2019 - 2AIRFM These questions are in a specific order. 1. What is Scrabble? 2:30 sec. 2. Who invented it? 1:40 sec 3. Why is it called Scrabble? 30 sec 4. Why play Scrabble? 1:30 sec 5. Why should I join a Scrabble Club? 2:30 sec 6. What dictionary should I use? 3:00 mins. 7. Why are there weird words in the Scrabble Dictionary? 3:00 mins 8. What should I know? 2:30 sec 9. What is a good score in Scrabble? 1 min 10. How can I improve my Scrabble score? 1 min 11. How did you get interested in Scrabble? 1 min That’s eleven questions the volume has been turned up to 11! These are some suggestions for songs to be played between breaks:- Words of love – the Beatles G.L.O.R.I.A. - Them featuring Van Morrison Words - the Bee Gees V.A.C.A.T.I.O.N. - Connie Francis Words - Neil Young D.I.V.O.R.C.E. - Tammy Wynette https://soundcloud.com/user147680538/community-interview-14th-march-2019 1. What is Scrabble? The game of Scrabble has been around since 1933 in one form or another in Western society, so I’ve always thought that everyone would have least heard of it. It wasn’t until recently that I realised there are people out there who don’t know what it is. Oddly enough, one of my relatives who is a very worldly character having run various clubs in his day, whom you would have thought was very knowledgeable brought this fact home to me, he was unaware of what it is. -
Autobiography of Sir George Biddell Airy by George Biddell Airy 1
Autobiography of Sir George Biddell Airy by George Biddell Airy 1 CHAPTER I. CHAPTER II. CHAPTER III. CHAPTER IV. CHAPTER V. CHAPTER VI. CHAPTER VII. CHAPTER VIII. CHAPTER IX. CHAPTER X. CHAPTER I. CHAPTER II. CHAPTER III. CHAPTER IV. CHAPTER V. CHAPTER VI. CHAPTER VII. CHAPTER VIII. CHAPTER IX. CHAPTER X. Autobiography of Sir George Biddell Airy by George Biddell Airy The Project Gutenberg EBook of Autobiography of Sir George Biddell Airy by George Biddell Airy This eBook is for the use of anyone anywhere at no cost and with almost no restrictions whatsoever. You may copy it, give it away or re-use it under the terms of the Project Gutenberg Autobiography of Sir George Biddell Airy by George Biddell Airy 2 License included with this eBook or online at www.gutenberg.net Title: Autobiography of Sir George Biddell Airy Author: George Biddell Airy Release Date: January 9, 2004 [EBook #10655] Language: English Character set encoding: ISO-8859-1 *** START OF THIS PROJECT GUTENBERG EBOOK SIR GEORGE AIRY *** Produced by Joseph Myers and PG Distributed Proofreaders AUTOBIOGRAPHY OF SIR GEORGE BIDDELL AIRY, K.C.B., M.A., LL.D., D.C.L., F.R.S., F.R.A.S., HONORARY FELLOW OF TRINITY COLLEGE, CAMBRIDGE, ASTRONOMER ROYAL FROM 1836 TO 1881. EDITED BY WILFRID AIRY, B.A., M.Inst.C.E. 1896 PREFACE. The life of Airy was essentially that of a hard-working, business man, and differed from that of other hard-working people only in the quality and variety of his work. It was not an exciting life, but it was full of interest, and his work brought him into close relations with many scientific men, and with many men high in the State. -
On the Development of Spinoza's Account of Human Religion
Intermountain West Journal of Religious Studies Volume 5 Number 1 Spring 2014 Article 4 2014 On the Development of Spinoza’s Account of Human Religion James Simkins University of Pittsburgh Follow this and additional works at: https://digitalcommons.usu.edu/imwjournal Recommended Citation Simkins, James "On the Development of Spinoza’s Account of Human Religion." Intermountain West Journal of Religious Studies 5, no. 1 (2014). https://digitalcommons.usu.edu/imwjournal/ vol5/iss1/4 This Article is brought to you for free and open access by the Journals at DigitalCommons@USU. It has been accepted for inclusion in Intermountain West Journal of Religious Studies by an authorized administrator of DigitalCommons@USU. For more information, please contact [email protected]. 52 James Simkins: On the Development of Spinoza’s Account of Human Religion JAMES SIMKINS graduated with philosophy, history, and history and philosophy of science majors from the University of Pittsburgh in 2013. He is currently taking an indefinite amount of time off to explore himself and contemplate whether or not to pursue graduate study. His academic interests include Spinoza, epistemology, and history from below. IMW Journal of Religious Studies Vol. 5:1 53 ‡ On the Development of Spinoza’s Account of Human Religion ‡ In his philosophical and political writings, Benedict Spinoza (1632-1677) develops an account of human religion, which represents a unique theoretical orientation in the early modern period.1 This position is implicit in many of Spinoza’s philosophical arguments in the Treatise on the Emendation of the Intellect, the Short Treatise, and Ethics.2 However, it is most carefully developed in his Tractatus Theologico-Politicus (hereafter TTP).3 What makes Spinoza’s position unique is the fact that he rejects a traditional conception of religion on naturalistic grounds, while refusing to dismiss all religion as an entirely anthropological phenomenon. -
Apocrypha Discordiadiscordia Ðe Seconde Edityon
ApocryphaApocrypha DiscordiaDiscordia Ðe Seconde Edityon Compy’eled fromme Dyverƒ Sorƒeƒ by Hiƒ Wholineß ðe Rev DrJon Swabey Wið ILLUMINATIONS by Pope Phil Wlodarczyk III To the Prettiest One and to Blade, without whom. and in honour: Mal2 and Omar; Greg and Kerry; A couple of guys, A couple of saints. Dance with the Goddess (Jiggy-Jiggy) ILLUMINATIONS BY POPE PHIL WLODARCZYK III Content and Layout The Rev DrJon Swabey & a whole bunch of other Erisians, Discordians and Weirdos far too many to list here on this tiny page (sorry). Where identified, they’re all credited in the text. All effort has been made to verify the (K) status of individual items, however in the event of non - (K) items being accidentally included, please notify, and said items will be removed in subsequent editions. ( K ) 2001 ALL RITES REVERSED REPRINT WHAT YOU LIKE Second Edition 2002 3 5 7 9 8 6 4 2 Apocrypha Discordia with ILLUMINATIONS by Pope Phil Wlodarczyk III Assembled by His Wholiness the Rev DrJon on behalf of The Committee for Public Safety Approved for abuse in schools Give me your tired, your poor, Your huddled masses yearning to be free The wretched refuse of your teeming shore This country always needs more Soylent Green HAIL ERIS! — καλλιχτι — ALL HAIL DISCORDIA! Eristroduction You should have put that in there...”I found out I was dying, and used my last days to create a Discordian Manual...” Prince MuChao, Private correspodance, January 2002 Of course, I was wrong, Little Deluded Dupe that I am. Seven days before I was scheduled for Surgery, that quiet voice which I imagine also talks to Zen monks, Sufi mullahs and other Disreputable Persons at the End, rapped sharply on my skull and told me to get my shit in order within the week. -
Menasseh Ben Israel and His World Brill's Studies in Intellectual History
MENASSEH BEN ISRAEL AND HIS WORLD BRILL'S STUDIES IN INTELLECTUAL HISTORY General Editor AJ. VANDERJAGT, University of Groningen Editorial Board M. COLISH, Oberlin College J.I. ISRAEL, University College, London J.D. NORTH, University of Groningen R.H. POPKIN, Washington University, St. Louis-UCLA VOLUME 15 MENASSEH BEN ISRAEL AND HIS WORLD EDITED BY YOSEF KAPLAN, HENRY MECHOULAN AND RICHARD H. POPKIN ^o fr-hw'* -A EJ. BRILL LEIDEN • NEW YORK • K0BENHAVN • KÖLN 1989 Published with financial support from the Dr. C. Louise Thijssen- Schoutestichting. Library of Congress Cataloging-in-Publication Data Menasseh Ben Israel and his world / edited by Yosef Kaplan, Henry Méchoulan and Richard H. Popkin. p. cm. -- (Brill's studies in intellectual history, ISSN 0920-8607 ; v. 15) Includes index. ISBN 9004091149 1. Menasseh ben Israel, 1604-1657. 2. Rabbis-Netherlands- -Amsterdam-Biography. 3. Amsterdam (Netherlands)-Biography. 4. Sephardim--Netherlands--Amsterdam--History--17th century. 5. Judaism--Netherlands--Amsterdam--History--17th century. I. Kaplan, Yosef. II. Popkin, Richard Henry, 1923- BM755.M25M46 1989 296'.092-dc20 89-7265 [B] CIP ISSN 0920-8607 ISBN 90 04 09114 9 © Copyright 1989 by E.J. Brill, The Netherlands All rights reserved. No part of this book may be reproduced or translated in any form, by print, photoprint, microfilm, microfiche or any other means without written permission from the publisher PRINTED IN THE NETHERLANDS BY E.J. BRILI, CONTENTS Introduction, Richard H. Popkin vu A Generation of Progress in the Historical Study of Dutch Sephardic Jewry, Yosef Kaplan 1 The Jewish Dimension of the Scottish Apocalypse: Climate, Cove- nant and World Renewal, Arthur H. -
Pioneers in Optics: Christiaan Huygens
Downloaded from Microscopy Pioneers https://www.cambridge.org/core Pioneers in Optics: Christiaan Huygens Eric Clark From the website Molecular Expressions created by the late Michael Davidson and now maintained by Eric Clark, National Magnetic Field Laboratory, Florida State University, Tallahassee, FL 32306 . IP address: [email protected] 170.106.33.22 Christiaan Huygens reliability and accuracy. The first watch using this principle (1629–1695) was finished in 1675, whereupon it was promptly presented , on Christiaan Huygens was a to his sponsor, King Louis XIV. 29 Sep 2021 at 16:11:10 brilliant Dutch mathematician, In 1681, Huygens returned to Holland where he began physicist, and astronomer who lived to construct optical lenses with extremely large focal lengths, during the seventeenth century, a which were eventually presented to the Royal Society of period sometimes referred to as the London, where they remain today. Continuing along this line Scientific Revolution. Huygens, a of work, Huygens perfected his skills in lens grinding and highly gifted theoretical and experi- subsequently invented the achromatic eyepiece that bears his , subject to the Cambridge Core terms of use, available at mental scientist, is best known name and is still in widespread use today. for his work on the theories of Huygens left Holland in 1689, and ventured to London centrifugal force, the wave theory of where he became acquainted with Sir Isaac Newton and began light, and the pendulum clock. to study Newton’s theories on classical physics. Although it At an early age, Huygens began seems Huygens was duly impressed with Newton’s work, he work in advanced mathematics was still very skeptical about any theory that did not explain by attempting to disprove several theories established by gravitation by mechanical means. -
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. -
Sacred Feminine Symbol Described in Dan Brown’S the Da Vinci Code
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Udinus Repo SACRED FEMININE SYMBOL DESCRIBED IN DAN BROWN’S THE DA VINCI CODE A THESIS Submitted in partial fulfillment of the requirements for the completion for the Degree of Sarjana Sastra (S.S) in English Language specialized in Literature By: Mathresti Hartono C11.2009.01017 FACULTY OF HUMANITIES DIAN NUSWANTORO UNIVERSITY SEMARANG 2013 STATEMENT OF ORIGINALITY I certify that this thesis is absolutely my own work. I am completely responsible for the content of this thesis. Opinions or findings of others are quoted and cited with respect to ethical standard. Semarang, August 2013 Mathresti Hartono MOTTO Good does never mean good and bad does never mean bad. Dare to choose and never look back. Everything can change depends on how you look and handle it, because every things in this world has many sides to be seen. DEDICATION This thesis is dedicated to: - My parents - My family - My University, Dian Nuswantoro University ACKNOWLEDGEMENT At this happiest moment, I would like to wish a prayer to my Lord, Jesus Christ who has blessed me during writing this thesis. Furthermore, I would like to express my sincere thanks to: 1. Mr. Achmad Basari, S.S., Dean of Faculty of Humanities of Dian Nuswantoro University, who gave me permission to conduct this thesis. 2. Mr. Sunardi, S.S., M.Pd., The head of English Department of Strata 1 Program, Faculty of Humanities, Dian Nuswantoro University, who gave me permission to conduct this thesis. 3. Ms. -
Computer-Aided Design and Kinematic Simulation of Huygens's
applied sciences Article Computer-Aided Design and Kinematic Simulation of Huygens’s Pendulum Clock Gloria Del Río-Cidoncha 1, José Ignacio Rojas-Sola 2,* and Francisco Javier González-Cabanes 3 1 Department of Engineering Graphics, University of Seville, 41092 Seville, Spain; [email protected] 2 Department of Engineering Graphics, Design, and Projects, University of Jaen, 23071 Jaen, Spain 3 University of Seville, 41092 Seville, Spain; [email protected] * Correspondence: [email protected]; Tel.: +34-953-212452 Received: 25 November 2019; Accepted: 9 January 2020; Published: 10 January 2020 Abstract: This article presents both the three-dimensional modelling of the isochronous pendulum clock and the simulation of its movement, as designed by the Dutch physicist, mathematician, and astronomer Christiaan Huygens, and published in 1673. This invention was chosen for this research not only due to the major technological advance that it represented as the first reliable meter of time, but also for its historical interest, since this timepiece embodied the theory of pendular movement enunciated by Huygens, which remains in force today. This 3D modelling is based on the information provided in the only plan of assembly found as an illustration in the book Horologium Oscillatorium, whereby each of its pieces has been sized and modelled, its final assembly has been carried out, and its operation has been correctly verified by means of CATIA V5 software. Likewise, the kinematic simulation of the pendulum has been carried out, following the approximation of the string by a simple chain of seven links as a composite pendulum. The results have demonstrated the exactitude of the clock. -
ALBERT VAN HELDEN + HUYGENS’S RING CASSINI’S DIVISION O & O SATURN’S CHILDREN
_ ALBERT VAN HELDEN + HUYGENS’S RING CASSINI’S DIVISION o & o SATURN’S CHILDREN )0g-_ DIBNER LIBRARY LECTURE , HUYGENS’S RING, CASSINI’S DIVISION & SATURN’S CHILDREN c !@ _+++++++++ l ++++++++++ _) _) _) _) _)HUYGENS’S RING, _)CASSINI’S DIVISION _) _)& _)SATURN’S CHILDREN _) _) _)DDDDD _) _) _)Albert van Helden _) _) _) , _) _) _)_ _) _) _) _) _) · _) _) _) ; {(((((((((QW(((((((((} , 20013–7012 Text Copyright ©2006 Albert van Helden. All rights reserved. A H is Professor Emeritus at Rice University and the Univer- HUYGENS’S RING, CASSINI’S DIVISION sity of Utrecht, Netherlands, where he resides and teaches on a regular basis. He received his B.S and M.S. from Stevens Institute of Technology, M.A. from the AND SATURN’S CHILDREN University of Michigan and Ph.D. from Imperial College, University of London. Van Helden is a renowned author who has published respected books and arti- cles about the history of science, including the translation of Galileo’s “Sidereus Nuncius” into English. He has numerous periodical contributions to his credit and has served on the editorial boards of Air and Space, 1990-present; Journal for the History of Astronomy, 1988-present; Isis, 1989–1994; and Tractrix, 1989–1995. During his tenure at Rice University (1970–2001), van Helden was instrumental in establishing the “Galileo Project,”a Web-based source of information on the life and work of Galileo Galilei and the science of his time. A native of the Netherlands, Professor van Helden returned to his homeland in 2001 to join the faculty of Utrecht University.