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Sparks, Shocks and Voltage Traces As Windows Into Experience: the Spiraled Conductor and Star Wheel Interrupter of Charles Grafton Page
| Sparks, Shocks and Voltage Traces as Windows into Experience | 123 | Sparks, Shocks and Voltage Traces as Windows into Experience: The Spiraled Conductor and Star Wheel Interrupter of Charles Grafton Page Elizabeth CAVICCHI a T Abstract When battery current flowing in his homemade spiraled conductor switched off, nineteenth century experimenter Charles Grafton Page saw sparks and felt shocks, even in parts of the spiral where no current passed. Reproducing his experiment today is improvisational: an oscilloscope replaces Page’s body; a copper star spinning through galinstan substitutes for Barlow’s wheel interrupter. Green and purple flashes accompanied my spinning wheel. Unlike what Page’s shocks showed, induced voltages probed across my spiral’s wider spans were variable, precipitating extensive explorations of its resonant fre - quencies. Redoing historical experiments extends our experience, fostering new observations about natural phenomena and experimental development. Keywords: electromagnetic induction, historical replication, Charles Grafton Page, exploratory learning, spiral, Barlow wheel, galinstan, autotransformer T Introduction real? Facing wires and wiggling magnetic needles firsthand, while trying to make sense of it, deepens Historical experiments come to us in fragments: our perspective; we become confused and curious handwritten data, published reports, and often non - (Cavicchi 2003). Redoing an experiment is not just a functioning apparatus. A further carry-over may per - check on facts, dates, whether Oersted’s needle went sist in ideas, procedures, materials and inventions east or west. It gives us access to experience congru - bearing imprints of the prior work. All these are clues ous with the past: “’to know an experimenter, you to something both more transitory and more coher - should replicate her study’” (Kurz 2001, p. -
MOST HOLY REDEEMER CATHOLIC CHURCH Rev
MOST HOLY REDEEMER CATHOLIC CHURCH Rev. Adam Izbicki, Pastor Fr. William Villa, in Residence 8523 Normandy Blvd., Jax., FL 32221-6701 (904) 786-1192 FAX: 786-4224 e-mail: [email protected] Parish Website: www.mhrjax.org Office Hours: M, Tu, Th, F 9:00 am to 1:00 pm Wed. 9:00 am to 4:00 pm MISSION STATEMENT Most Holy Redeemer Parish is a diverse Catholic community of believers who Mass Schedule celebrate and rejoice in the love of God and love of one another. Empowered by the grace of the Holy Spirit, our mission is to invite and welcome all. Masses for the Lord’s Day Saturday Vigil 5:30 pm Sunday 8 am and 10:30 am “I am the good shepherd, and I know mine and mine know me…” Domingo (en español1:00 Jn:10 Weekday Masses Tuesday, Wednesday, Thursday and Friday at 8:30 am Viernes (en español) 7:00 pm (No Mass on Mondays except holidays) Reconciliation Saturdays 4:30-5:15 pm or by appointment Exposition of the Blessed Sacrament will follow masses on Fourth Sunday of Easter, April 25, 2021 the first Thursday, Friday and Saturday of each month Parish Staff/ Personnel Mass Intentions Pastor Rev. Adam Izbicki Week of April 25-May 1 904-786-1192 X 226 Requestors [email protected] Rev. William F. Villa Sat Apr 24 530pm +Leonia Laxamana Camacho Fam In residence X 230 [email protected] Sun Apr 25 800am +Casimiro & Lourdes Edido Ching Vianzon Deacon John “Jack” H. Baker Sun Apr 25 1030am +Miller Family Majcak Family 904-477-7252 [email protected] Sun Apr 25 100pm Pro-Populo Deacon Milton Vega Mon Apr 26 No Mass 904-945-8321 [email protected] -
The 1 Millionth Telephone Was Installed in May…1967
The 1 Millionth Telephone Was Installed In May…1967 On April 25th, we observe National Telephone Day. The correct answer to a trivia question like “Who invented the telephone?” is the name on the patent. In this case, the whole world knows the answer is Alexander Graham Bell. Had his attorney been delayed by foul weather or poor planning, the answer may be a different name. It was February 14, 1876, when Marcellus Bailey, one of Bell’s attorneys rushed into the US Patent office in Boston to file the patent for what would be the telephone. Later the same day, Elisha Gray filed a patent caveat for a similar device. A caveat is an intent to file for a patent. There is also a third contender. Antonio Meucci filed a caveat in November of 1871 for a talking telegraph but failed to renew the caveat due to hardships. Because Bell’s patent was submitted first, it was awarded to him on March 7, 1876. Gray contested this decision in court, but without success. Born March 3, 1847, in Edinburgh, United Kingdom, Bell was an instructor at a boys’ boarding school. The sounds of speech were an integral part of his life. His father developed a “Visible Speech” system for deaf students to communicate. Bell would later become friend and benefactor of Helen Keller. Three days after the patent was approved, Bell spoke the first words by telephone to his assistant. “Mr.Watson, come here! I want to see you!” By May, Bell and his team were ready for a public demonstration, and there would be no better place than the World’s Fair in Philadelphia. -
Giuseppe Maria Abbate the Italian-American Celestial Messenger
Magnus Lundberg & James W. Craig Jim W Giuseppe Maria Abbate The Italian-American Celestial Messenger Uppsala Studies in Church History 7 1 About the Series Uppsala Studies in Church History is a series that is published in the Department of Theology, Uppsala University. It includes works in both English and Swedish. The volumes are available open-access and only published in digital form, see www.diva-portal.org. For information on the individual titles, see the last page of this book. About the authors Magnus Lundberg is Professor of Church and Mission Studies and Acting Professor of Church History at Uppsala University. He specializes in early modern and modern church and mission history with a focus on colonial Latin America, Western Europe and on contemporary traditionalist and fringe Catholicism. This is his third monograph in the Uppsala Studies in Church History Series. In 2017, he published A Pope of Their Own: Palmar de Troya and the Palmarian Church and Tomás Ruiz: Utbildning, karriär och konflikter i den sena kolonialtidens Centralamerika. The Rev. Father James W. Craig is a priest living in the Chicagoland area. He has a degree in History from Northeastern Illinois University and is a member of Phi Alpha Theta the national honor society for historians. He was ordained to the priesthood of the North American Old Roman Catholic Church in 1994 by the late Archbishop Theodore Rematt. From the time he first started hearing stories of the Celestial Father he became fascinated with the life and legacy of Giuseppe Maria Abbate. He is also actively involved with the website Find a Grave, to date having posted over 31,000 photos to the site and creating over 12,000 memorials to commemorate the departed. -
Local-Loop and DSL REFERENCE GUIDE Table of Contents
Local-Loop and DSL REFERENCE GUIDE Table of Contents Prologue ............................................................................ 2 2.3.9.3 REIN ....................................................................32 2.3.9.4 SHINE..................................................................32 1. Introduction ................................................................. 5 2.3.9.5 PEIN ....................................................................32 2. What is DSL? ................................................................ 6 2.3.10 Bonding...............................................................33 2.3.11 Vectoring ............................................................35 2.1 Pre-DSL Delivery of Data ........................................................... 6 2.3.12 G.Fast ..................................................................36 2.1.1 Dial-Up ................................................................................ 6 2.1.2 ISDN .................................................................................... 7 3. DSL Deployment Issues ...........................................38 2.2 xDSL Overview ............................................................................. 8 3.1 Determining the Nature of the Problem ...............................39 2.3 DSL In-Depth .............................................................................12 3.2 Performing a Visual Inspection ..............................................44 2.3.1 ISDN ..................................................................................13 -
A Chronological History of Electrical Development from 600 B.C
From the collection of the n z m o PreTinger JJibrary San Francisco, California 2006 / A CHRONOLOGICAL HISTORY OF ELECTRICAL DEVELOPMENT FROM 600 B.C. PRICE $2.00 NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION 155 EAST 44th STREET NEW YORK 17, N. Y. Copyright 1946 National Electrical Manufacturers Association Printed in U. S. A. Excerpts from this book may be used without permission PREFACE presenting this Electrical Chronology, the National Elec- JNtrical Manufacturers Association, which has undertaken its compilation, has exercised all possible care in obtaining the data included. Basic sources of information have been search- ed; where possible, those in a position to know have been con- sulted; the works of others, who had a part in developments referred to in this Chronology, and who are now deceased, have been examined. There may be some discrepancies as to dates and data because it has been impossible to obtain unchallenged record of the per- son to whom should go the credit. In cases where there are several claimants every effort has been made to list all of them. The National Electrical Manufacturers Association accepts no responsibility as being a party to supporting the claims of any person, persons or organizations who may disagree with any of the dates, data or any other information forming a part of the Chronology, and leaves it to the reader to decide for him- self on those matters which may be controversial. No compilation of this kind is ever entirely complete or final and is always subject to revisions and additions. It should be understood that the Chronology consists only of basic data from which have stemmed many other electrical developments and uses. -
S National Telephone Day
Call Someone And Tell Them It’s National Telephone Day On April 25th, we observe National Telephone Day. The correct answer to a trivia question like “Who invented the telephone?” is the name on the patent. In this case, the whole world knows the answer is Alexander Graham Bell. Had his attorney been delayed by foul weather or poor planning, the answer may be a different name. It was February 14, 1876, when Marcellus Bailey, one of Bell’s attorneys rushed into the US Patent office in Boston to file the patent for what would be the telephone. Later the same day, Elisha Gray filed a patent caveat for a similar device. A caveat is an intent to file for a patent. There is also a third contender. Antonio Meucci filed a caveat in November of 1971 for a talking telegraph but failed to renew the caveat due to hardships. Because Bell’s patent was submitted first, it was awarded to him on March 7, 1876. Gray contested this decision in court, but without success. Born March 3, 1847, in Edinburgh, England, Bell was an instructor at a boys’ boarding school. The sounds of speech were an integral part of his life. His father developed a “Visible Speech” system for deaf students to communicate. Bell would later become friend and benefactor of Helen Keller. Three days after the patent was was approved, Bell spoke the first words by telephone to his assistant. “Mr.Watson, come here! I want to see you!” By May Bell and his team were ready for a public demonstration and there would be no better place than the World’s Fair in Philadelphia. -
Robert Cowley: Living Free During Slavery in Eighteenth-Century Richmond, Virginia
Virginia Commonwealth University VCU Scholars Compass Theses and Dissertations Graduate School 2020 Robert Cowley: Living Free During Slavery in Eighteenth-Century Richmond, Virginia Ana F. Edwards Virginia Commonwealth University Follow this and additional works at: https://scholarscompass.vcu.edu/etd Part of the African American Studies Commons, Other American Studies Commons, Social History Commons, and the United States History Commons © The Author Downloaded from https://scholarscompass.vcu.edu/etd/6362 This Thesis is brought to you for free and open access by the Graduate School at VCU Scholars Compass. It has been accepted for inclusion in Theses and Dissertations by an authorized administrator of VCU Scholars Compass. For more information, please contact [email protected]. Robert Cowley: Living Free During Slavery in Eighteenth-Century Richmond, Virginia A thesis submitted in partial fulfillment of the requirements for the degree of Master of Arts from the Department of History at Virginia Commonwealth University. by Ana Frances Edwards Wilayto Bachelor of Arts, California State Polytechnic University at Pomona, 1983 Director of Record: Ryan K. Smith, Ph. D., Professor, Department of History, Virginia Commonwealth University Adviser: Nicole Myers Turner, Ph. D., Professor, Department of Religious Studies, Yale University Outside Reader: Michael L. Blakey, Ph. D., Professor, Department of Anthropology, College of William & Mary Virginia Commonwealth University Richmond, Virginia June 2020 © Ana Frances Edwards Wilayto 2020 All Rights Reserved 2 of 115 For Grandma Thelma and Grandpa Melvin, Grandma Mildred and Grandpa Paul. For Mom and Dad, Allma and Margit. For Walker, Taimir and Phil. Acknowledgements I am grateful to the professors--John Kneebone, Carolyn Eastman, John Herman, Brian Daugherty, Bernard Moitt, Ryan Smith, and Sarah Meacham--who each taught me something specific about history, historiography, academia and teaching. -
History of Communication
History of Communication Animals have their own methods of communication. For example Dolphins use sound to communicate with other dolphins and to echolocate when hunting. From the early history of human existence there have been many ways of communicating each other. People from different parts of the world use a variety of languages to express their thoughts. Gradually civilization thrived and ways of communicating other continents became a general need to build up political and economical inter-relationships among them. We find many curious and interesting methods of communication in the history of the world. Sri Lankan history reveals that messages were sent by birds often. And some messages were named after the bird that carried it. The postal system was one of the early forms of communication. Chou Dynasty created his own postal system in 1000 B.C. The mail would travel on a horse to the next pass. Romans had their own system called the “Cursus Pubius”, they used foot messengers. Genghis Khan made an early postal system using homing pigeons. Middle Age in European history is a very important period. After the invention of the printing machine people in Europe gathered knowledge by reading. They started thinking. Hence, many inventions and theories came forward. Among them were telegraph, telephone, television and radio. British inventors Sir Charles Wheatstone and William F. Cook invented the telegraph in 1837. Samuel Morse invented the telegraph communication system called the Morse code. It had long and short electrical impulses referring as dots and dashes. Each impulse is either a letter or number. -
Searchable PDF Index
TELEPHONE COLLECTORS INTERNATIONAL Telephone Collectors International is an organization of telephone collectors, hobbyists and historians who are helping to preserve the history of the telecommunications industry through the collection of telephones and telephone related material. Our collections represent all aspects of the industry; from the very first wooden prototypes that started the industry to the technological marvels that made the automatic telephone exchange possible. If any of this interests you, we invite you to join our organization. Look around and see what we have to offer. Thanks for stopping by! Telephone Collectors International website including become a member: http://www.telephonecollectors.org/ Questions or comments about TCI? Send e-mail to [email protected] ********************************************************************************* Books Recommended by the editors: Available now ... Old-Time Telephones! Design, History, and Restoration by Ralph O. Meyer ... 264pp Soft Cover 2nd Edition, Expanded and Revised ... A Schiffer Book with Price Guide for Collectors Available at Phoneco.com or Schiffer Publishing, Ltd., 4880 Lower Valley Rd, Atglen, PA 19310 e-mail: [email protected] ********************************************************************************** Coming Soon: TELEPHONE Dials and Pushbuttons Their History, Development and Usage by Stanley Swihart ... 2 volumes, 300 pp ea. Box 2818, Dublin, CA., 94568-0818. Phone 1 (925)-829-2728, e-mail [email protected] ********************************************************************************* -
Detection of Smartphone Malware
Detection of Smartphone Malware Eingereicht von Diplom-Informatiker Aubrey-Derrick Schmidt Von der Fakult¨atIV { Elektrotechnik und Informatik der Technischen Universit¨atBerlin zur Erlangung des akademischen Grades Doktor der Ingenieurwissenschaften { Dr.-Ing. { genehmigte Dissertation Promotionsausschuß: Vorsitzender: Prof. Dr. Jean-Pierre Seifert Berichter: Prof. Dr.-Ing. Sahin Albayrak Berichter: Prof. Dr. Fernando C. Colon Osorio Tag der wissenschaftlichen Aussprache: 28.06.2011 Berlin 2011 D 83 ii Acknowledgements On completion of my Ph.D. thesis I would like to sincerely thank all those who supported me in realizing and finishing my work. First of all, I am heartily thankful to my supervisors and Ph.D. Com- mittee spending time and effort on me. Prof. Dr.-Ing. Sahin Albayrak and Ph.D. Ahmet Camtepe always were a shining example for scientific success to me. Throughout all of the stages of my thesis, they helped me to keep track on the right research direction, seriously revised all of my work, and patiently discussed and resolved issues not only related to my work. I am also deeply moved by their serious and honest attitude towards academic work. Additionally, I really appreciate their will for hosting and motivating me all the time while working at DAI-Laboratory at Technische Univer- sit¨atBerlin. I want to honestly thank them for their friendly, personal, and self-sacrificing will to help me in any situation throughout my time at the DAI-Laboratory. When meeting Prof. Dr. Fernando C. Colon Osorio on Malware Conference 2009 in Montreal the first time, I was really impressed by his will to put scientific discussion into the focus of the conference. -
Induction Coils A
7/25/2018 Induction Coil Induction Coils A. The Original Induction Coils The original induction coil was invented in 1836 by Nicholas Callan (1799-1864), a priest and the professor of natural philosophy at St. Patrick's College at Maynooth, County Kildare, Ireland. The basis for the coil was his large electromagnet with primary and secondary windings on the extremities of the U-shaped iron core. The primary circuit was interrupted (to get the required alternating current) by the mechanical Repeater that Callan designed. Callan's Great Induction Coil (left below) was left unfinished at Callan's death. The three secondary coils contain a total of 150,000 feet of fine iron wire. The primary coil is made of copper tape, wound around a core of iron wires. At the right below is the (incomplete) mechanism of interrupting the primary current. This apparatus, along with a similar one made by Callan which has only one secondary coil, is on display at the St. Patrick's College museum. The museum at St. Patrick's College contains parts of other early induction coils by Nicholas Callan. At the right are two long primary coils, and four toroidal secondary coils. The latter were insulated with a mixture of melted rosin and beeswax. Callan found that he could insulate 8000 ft of iron wire, 0.03 in. in diameter, per hour by passing it through this mixture and allowing it to harden on the wire, all in a continuous process. Independent of Callan, the American electrical inventor Charles Grafton Page (1812-1868) developed an induction coil in 1836.