Telegraphy and the Genesis of Electrical Engineering in France, 1845-1881 Andrew J
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Implementation of the Fizeau Aether Drag Experiment for An
Implementation of the Fizeau Aether Drag Experiment for an Undergraduate Physics Laboratory by Bahrudin Trbalic Submitted to the Department of Physics in partial fulfillment of the requirements for the degree of Bachelor of Science in Physics at the MASSACHUSETTS INSTITUTE OF TECHNOLOGY May 2020 c Massachusetts Institute of Technology 2020. All rights reserved. ○ Author................................................................ Department of Physics May 8, 2020 Certified by. Sean P. Robinson Lecturer of Physics Thesis Supervisor Certified by. Joseph A. Formaggio Professor of Physics Thesis Supervisor Accepted by . Nergis Mavalvala Associate Department Head, Department of Physics 2 Implementation of the Fizeau Aether Drag Experiment for an Undergraduate Physics Laboratory by Bahrudin Trbalic Submitted to the Department of Physics on May 8, 2020, in partial fulfillment of the requirements for the degree of Bachelor of Science in Physics Abstract This work presents the description and implementation of the historically significant Fizeau aether drag experiment in an undergraduate physics laboratory setting. The implementation is optimized to be inexpensive and reproducible in laboratories that aim to educate students in experimental physics. A detailed list of materials, experi- mental setup, and procedures is given. Additionally, a laboratory manual, preparatory materials, and solutions are included. Thesis Supervisor: Sean P. Robinson Title: Lecturer of Physics Thesis Supervisor: Joseph A. Formaggio Title: Professor of Physics 3 4 Acknowledgments I gratefully acknowledge the instrumental help of Prof. Joseph Formaggio and Dr. Sean P. Robinson for the guidance in this thesis work and in my academic life. The Experimental Physics Lab (J-Lab) has been the pinnacle of my MIT experience and I’m thankful for the time spent there. -
Introduction 1
1 1 Introduction . ex arte calcinati, et illuminato aeri [ . properly calcinated, and illuminated seu solis radiis, seu fl ammae either by sunlight or fl ames, they conceive fulgoribus expositi, lucem inde sine light from themselves without heat; . ] calore concipiunt in sese; . Licetus, 1640 (about the Bologna stone) 1.1 What Is Luminescence? The word luminescence, which comes from the Latin (lumen = light) was fi rst introduced as luminescenz by the physicist and science historian Eilhardt Wiede- mann in 1888, to describe “ all those phenomena of light which are not solely conditioned by the rise in temperature,” as opposed to incandescence. Lumines- cence is often considered as cold light whereas incandescence is hot light. Luminescence is more precisely defi ned as follows: spontaneous emission of radia- tion from an electronically excited species or from a vibrationally excited species not in thermal equilibrium with its environment. 1) The various types of lumines- cence are classifi ed according to the mode of excitation (see Table 1.1 ). Luminescent compounds can be of very different kinds: • Organic compounds : aromatic hydrocarbons (naphthalene, anthracene, phenan- threne, pyrene, perylene, porphyrins, phtalocyanins, etc.) and derivatives, dyes (fl uorescein, rhodamines, coumarins, oxazines), polyenes, diphenylpolyenes, some amino acids (tryptophan, tyrosine, phenylalanine), etc. + 3 + 3 + • Inorganic compounds : uranyl ion (UO 2 ), lanthanide ions (e.g., Eu , Tb ), doped glasses (e.g., with Nd, Mn, Ce, Sn, Cu, Ag), crystals (ZnS, CdS, ZnSe, CdSe, 3 + GaS, GaP, Al 2 O3 /Cr (ruby)), semiconductor nanocrystals (e.g., CdSe), metal clusters, carbon nanotubes and some fullerenes, etc. 1) Braslavsky , S. et al . ( 2007 ) Glossary of terms used in photochemistry , Pure Appl. -
THE CABLE THAT WIRED the WORLD 41 the CABLE THAT WIRED the WORLD Today We Take Global Attractive Proposition to the Cotton Communications for Granted
INFORM NETWORK DEVELOP NIGEL LINGE, BILL BURNS THE CABLE THAT WIRED THE WORLD 41 THE CABLE THAT WIRED THE WORLD Today we take global attractive proposition to the cotton communications for granted. NIGEL LINGE, merchants and growers. However, it was an American, Cyrus Field (see Figure 1), who on Whether telephoning someone in BILL BURNS 6 November 1856 established the Atlantic America, sending emails to Telegraph Company and sought to raise Australia or simply browsing the Xxxx xxxx xxxx £350,000 to manufacture and lay a web, we accept that our global telegraph cable between Britain and North America. To appreciate the scale of what telecommunications networks was being proposed, 1,600 nautical miles of will make it all happen. cable would be required to cross the Atlantic Nevertheless, life hasn’t always at its shortest width between the west coast been this convenient and this of Ireland and the east coast of Newfoundland, Canada. The longest year we are celebrating the 150th successful undersea cable that had been anniversary of a significant event constructed up until that time was a mere that proved to be the catalyst for 300 miles in length under the Black Sea, linking the Crimea to Varna on the Bulgarian a telecommunications revolution coast. that laid the foundations of the global connectivity that we all Nevertheless, the Victorian can-do attitude enjoy today – the first fully- prevailed and on 31 July 1857, HMS Agamemnon and USA Niagara set sail from operational telecommunications Figure 1: Cyrus Field (1819-1892), Pioneer of the Valentia in Ireland and headed west towards cable to be laid under the Trans-Atlantic Telegraph Trinity Bay in Newfoundland. -
The Stage Is Set
The Stage Is Set: Developments before 1900 Leading to Practical Wireless Communication Darrel T. Emerson National Radio Astronomy Observatory1, 949 N. Cherry Avenue, Tucson, AZ 85721 In 1909, Guglielmo Marconi and Carl Ferdinand Braun were awarded the Nobel Prize in Physics "in recognition of their contributions to the development of wireless telegraphy." In the Nobel Prize Presentation Speech by the President of the Royal Swedish Academy of Sciences [1], tribute was first paid to the earlier theorists and experimentalists. “It was Faraday with his unique penetrating power of mind, who first suspected a close connection between the phenomena of light and electricity, and it was Maxwell who transformed his bold concepts and thoughts into mathematical language, and finally, it was Hertz who through his classical experiments showed that the new ideas as to the nature of electricity and light had a real basis in fact.” These and many other scientists set the stage for the rapid development of wireless communication starting in the last decade of the 19th century. I. INTRODUCTION A key factor in the development of wireless communication, as opposed to pure research into the science of electromagnetic waves and phenomena, was simply the motivation to make it work. More than anyone else, Marconi was to provide that. However, for the possibility of wireless communication to be treated as a serious possibility in the first place and for it to be able to develop, there had to be an adequate theoretical and technological background. Electromagnetic theory, itself based on earlier experiment and theory, had to be sufficiently developed that 1. -
Battle Management Language: History, Employment and NATO Technical Activities
Battle Management Language: History, Employment and NATO Technical Activities Mr. Kevin Galvin Quintec Mountbatten House, Basing View, Basingstoke Hampshire, RG21 4HJ UNITED KINGDOM [email protected] ABSTRACT This paper is one of a coordinated set prepared for a NATO Modelling and Simulation Group Lecture Series in Command and Control – Simulation Interoperability (C2SIM). This paper provides an introduction to the concept and historical use and employment of Battle Management Language as they have developed, and the technical activities that were started to achieve interoperability between digitised command and control and simulation systems. 1.0 INTRODUCTION This paper provides a background to the historical employment and implementation of Battle Management Languages (BML) and the challenges that face the military forces today as they deploy digitised C2 systems and have increasingly used simulation tools to both stimulate the training of commanders and their staffs at all echelons of command. The specific areas covered within this section include the following: • The current problem space. • Historical background to the development and employment of Battle Management Languages (BML) as technology evolved to communicate within military organisations. • The challenges that NATO and nations face in C2SIM interoperation. • Strategy and Policy Statements on interoperability between C2 and simulation systems. • NATO technical activities that have been instigated to examine C2Sim interoperation. 2.0 CURRENT PROBLEM SPACE “Linking sensors, decision makers and weapon systems so that information can be translated into synchronised and overwhelming military effect at optimum tempo” (Lt Gen Sir Robert Fulton, Deputy Chief of Defence Staff, 29th May 2002) Although General Fulton made that statement in 2002 at a time when the concept of network enabled operations was being formulated by the UK and within other nations, the requirement remains extant. -
DR. DOMINIQUE AUBERT DOB 10Th August 1978 - 31 Years French
DR. DOMINIQUE AUBERT DOB 10th August 1978 - 31 years French Lecturer Université de Strasbourg Observatoire Astronomique [email protected] http://astro.u-strasbg.fr/~aubert CURRENT SITUATION Lecturer at the University of Strasbourg, member of the Astronomical Observatory since September 2006. TOPICS RESEARCH • Formation of large structures in the Universe, Cosmology • Epoch of Reionization, galaxies, galactic dynamics, gravitational lenses • Numerical simulations, high performance computing, hardware acceleration of scientific computing on graphics cards (Graphics Processing Units - GPUs) CAREER • October 2005 - September 2006: Post-Doc CNRS, Service d'Astrophysique, CEA, Saclay, France. • April 2005 - October 2005: Max-Planck Institut fur Astrophysik, Garching, Germany, visitor. • April 2004-October 2004: Institute of Astronomy, Cambridge, UK, Marie Curie visitorship. • October 2001-April 2005: PhD thesis "Measurement and implications of dark matter flows at the surface of the virial sphere", University Paris XI and Astronomical Observatory of Strasbourg. REFEERED PUBLICATIONS • Reionisation powered by GPUs I : the structure of the ultra-violet background, Aubert D. & Teyssier R., April 2010, submitted to ApJ, available on request, arXiv:1004.2503 • The dusty, albeit ultraviolet bright infancy of galaxies. Devriendt, J.; Rimes, C.; Pichon, C.; Teyssier, R.; Le Borgne, D.; Aubert, D.; Audit, E.; Colombi, S.; Courty, S; Dubois, Y.; Prunet, S.; Rasera, Y.; Slyz, A.; Tweed, D., Submitted to MNRAS, arXiv:0912.0376 • Galactic kinematics with modified Newtonian dynamics. Bienaymé, O.; Famaey, B.; Wu, X.; Zhao, H. S.; Aubert, D. A&A, April 2009, in press. • A particle-mesh integrator for galactic dynamics powered by GPGPUs. Aubert, D., Amini, M. & David, R. Accepted contribution to ICCS 2009. • Full-Sky Weak Lensing Simulation with 70 Billion Particles. -
Alexander Graham Bell 1847-1922
NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA BIOGRAPHICAL MEMOIRS VOLUME XXIII FIRST MEMOIR BIOGRAPHICAL MEMOIR OF ALEXANDER GRAHAM BELL 1847-1922 BY HAROLD S. OSBORNE PRESENTED TO THE ACADEMY AT THE ANNUAL MEETING, 1943 It was the intention that this Biographical Memoir would be written jointly by the present author and the late Dr. Bancroft Gherardi. The scope of the memoir and plan of work were laid out in cooperation with him, but Dr. Gherardi's untimely death prevented the proposed collaboration in writing the text. The author expresses his appreciation also of the help of members of the Bell family, particularly Dr. Gilbert Grosvenor, and of Mr. R. T. Barrett and Mr. A. M. Dowling of the American Telephone & Telegraph Company staff. The courtesy of these gentlemen has included, in addition to other help, making available to the author historic documents relating to the life of Alexander Graham Bell in the files of the National Geographic Society and in the Historical Museum of the American Telephone and Telegraph Company. ALEXANDER GRAHAM BELL 1847-1922 BY HAROLD S. OSBORNE Alexander Graham Bell—teacher, scientist, inventor, gentle- man—was one whose life was devoted to the benefit of mankind with unusual success. Known throughout the world as the inventor of the telephone, he made also other inventions and scientific discoveries of first importance, greatly advanced the methods and practices for teaching the deaf and came to be admired and loved throughout the world for his accuracy of thought and expression, his rigid code of honor, punctilious courtesy, and unfailing generosity in helping others. -
The Concept of Field in the History of Electromagnetism
The concept of field in the history of electromagnetism Giovanni Miano Department of Electrical Engineering University of Naples Federico II ET2011-XXVII Riunione Annuale dei Ricercatori di Elettrotecnica Bologna 16-17 giugno 2011 Celebration of the 150th Birthday of Maxwell’s Equations 150 years ago (on March 1861) a young Maxwell (30 years old) published the first part of the paper On physical lines of force in which he wrote down the equations that, by bringing together the physics of electricity and magnetism, laid the foundations for electromagnetism and modern physics. Statue of Maxwell with its dog Toby. Plaque on E-side of the statue. Edinburgh, George Street. Talk Outline ! A brief survey of the birth of the electromagnetism: a long and intriguing story ! A rapid comparison of Weber’s electrodynamics and Maxwell’s theory: “direct action at distance” and “field theory” General References E. T. Wittaker, Theories of Aether and Electricity, Longam, Green and Co., London, 1910. O. Darrigol, Electrodynamics from Ampère to Einste in, Oxford University Press, 2000. O. M. Bucci, The Genesis of Maxwell’s Equations, in “History of Wireless”, T. K. Sarkar et al. Eds., Wiley-Interscience, 2006. Magnetism and Electricity In 1600 Gilbert published the “De Magnete, Magneticisque Corporibus, et de Magno Magnete Tellure” (On the Magnet and Magnetic Bodies, and on That Great Magnet the Earth). ! The Earth is magnetic ()*+(,-.*, Magnesia ad Sipylum) and this is why a compass points north. ! In a quite large class of bodies (glass, sulphur, …) the friction induces the same effect observed in the amber (!"#$%&'(, Elektron). Gilbert gave to it the name “electricus”. -
A Timeline of Technology
A Timeline of Technology 10 million Humans make the first tools from stone, wood, antlers, and bones. Tools and machines years ago. 1-2 million Humans discover fire. Biofuels Candles Car engines Jet engines years ago 10,000 BCE Earliest boats are constructed. Ships and boats 8000-9000 Beginnings of human settlements and agriculture. Biofuels BCE Water 6000-7000 Hand-made bricks first used for construction in the Middle East. Bricks BCE 4000 BCE Iron used for the first time in decorative ornaments. Iron and steel 3500 BCE Humans invent the wheel. Tools and machines Wheels and axles c1700 BCE Semites of the Mediterranean develop the alphabet. Digital pens 0-1500 BCE Ancient societies invent some of the first machines for moving water and agriculture. Tools and machines Water 1000 BCE Iron Age begins: iron is widely used for making tools and weapons in many parts of the world. Iron and steel c.150-100 First gear-driven, precision clockwork machine (the Antikythera mechanism) is developed. Clockwork BCE c.50 BCE Roman engineer Vitruvius perfects the modern, vertical water wheel. Turbines 62 CE Hero of Alexandria, a Greek scientist, pioneers steam power. Steam engines 105 CE Ts'ai Lun makes the first paper in China. Paper 27 BCE-395 Romans develop the first, basic concrete called pozzolana. Steel and concrete CE ~600 CE Windmills are invented in the Middle East. Wind turbines 700-900 CE Chinese invent gunpowder and fireworks. Bullets Fireworks 1000 CE ?? Chinese develop eyeglasses by fixing lenses to frames that fit onto people's faces. Lenses 1450 Johannes Gutenberg pioneers the modern printing press, using rearrangeable metal letters called movable type. -
Early Telecommunication and the Birth of Telegraphy in Malta
Early Telecommunication and the Birth of Telegraphy in Malta Mario Aloisio [email protected] Abstract: This paper reviews the birth of telegraphy and its take-up in Malta before the advent of radio. The driving force behind the adoption of a number of signalling methods and the telegraph in Malta was the militia, but a means of effective communication was also important for trade and as a warning system against unwanted intruders. Foreign, diplomatic, and news correspondence became possible after submarine cables linking Malta to mainland Europe were laid in the 1860s. Keywords: Telecommunications; electric telegraph, semaphore, submarine cables Introduction he Maltese archipelago has been the focus of attention of many powers who, at different periods, sought to capture and rule the Tislands. The Carthaginians, Romans, Arabs, Normans, French, and British, among others, all left their mark on these tiny islands. The Knights Hospitaller, a military religious order of St John now known as the Knights of Malta, settled in Malta in 1530 when Emperor Charles V of Sicily offered it to them after they had been driven out of Rhodes by Suleiman I. In 1798 the last grand master of the knights surrendered to Napoleon when the latter captured Malta on his way to Egypt. The French occupation was brief, the British taking over just two years later. Malta was made a British colony in 1813 and became independent in 1964. In view of Malta’s strategic location and therefore its importance as a military base and a place for international trade, the knights of St Symposia Melitensia Number 10 (2015) SYMPOSIA MELITENSIA NUMBER 10 (2015) John built impressive forts and bastions and improved upon existing defence structures. -
Innovation and Sustainability in French Fashion Tech Outlook and Opportunities. Report By
Innovation and sustainability in French Fashion Tech outlook and opportunities Commissioned by the Netherlands Enterprise Agency and the Innovation Department of the Embassy of the Kingdom of the Netherlands in France December 2019 This study is commissioned by the Innovation Department of the Embassy of the Kingdom of the Netherlands in France and the Netherlands Enterprise Agency (RVO.nl). Written by Alice Gras and Claire Eliot Translated by Sophie Bramel pages 6-8 INTRODUCTION 7 01. Definition and key dates 8 02. Dutch fashion tech dynamics I 9-17 THE CONVERGENCE OF ECOLOGICAL AND ECONOMIC SUSTAINABILITY IN FASHION 11-13 01. Key players 14 02. Monitoring impact 14-16 03. Sustainable innovation and business models 17 04. The impact and long-term influence of SDGs II 18-30 THE FRENCH FASHION INNOVATION LANDSCAPE 22-23 01. Technological innovation at leading French fashion companies 25-26 02. Public institutions and federations 27-28 03. Funding programmes 29 04. Independent structures, associations and start-ups 30 05. Specialised trade events 30 06. Specialised media 30 07. Business networks 30 08 . Technological platforms III 31-44 FASHION AND SCIENTIFIC RESEARCH: CURRENT AND FUTURE OUTLOOK 34-35 01. Mapping of research projects 36-37 02. State of fashion research in France 38-39 03. Key fields of research in fashion technology and sustainability 40 04. Application domains of textile research projects 42-44 05. Fostering research in France IV 45-58 NEW TECHNOLOGIES TO INNOVATE IN THE FRENCH FASHION SECTOR 47 01. 3D printing 48 02. 3D and CAD Design 49-50 03. Immersive technologies 51 04. -
The History of Solar
Solar technology isn’t new. Its history spans from the 7th Century B.C. to today. We started out concentrating the sun’s heat with glass and mirrors to light fires. Today, we have everything from solar-powered buildings to solar- powered vehicles. Here you can learn more about the milestones in the Byron Stafford, historical development of solar technology, century by NREL / PIX10730 Byron Stafford, century, and year by year. You can also glimpse the future. NREL / PIX05370 This timeline lists the milestones in the historical development of solar technology from the 7th Century B.C. to the 1200s A.D. 7th Century B.C. Magnifying glass used to concentrate sun’s rays to make fire and to burn ants. 3rd Century B.C. Courtesy of Greeks and Romans use burning mirrors to light torches for religious purposes. New Vision Technologies, Inc./ Images ©2000 NVTech.com 2nd Century B.C. As early as 212 BC, the Greek scientist, Archimedes, used the reflective properties of bronze shields to focus sunlight and to set fire to wooden ships from the Roman Empire which were besieging Syracuse. (Although no proof of such a feat exists, the Greek navy recreated the experiment in 1973 and successfully set fire to a wooden boat at a distance of 50 meters.) 20 A.D. Chinese document use of burning mirrors to light torches for religious purposes. 1st to 4th Century A.D. The famous Roman bathhouses in the first to fourth centuries A.D. had large south facing windows to let in the sun’s warmth.