Two Final Threats to Live Performance!

Total Page:16

File Type:pdf, Size:1020Kb

Two Final Threats to Live Performance! News From VHSource, LLC Vol 9 September 2012 Two Final threats to Live Performance! could sell more beer and spirits if they provided Birth of Radio and Television additional entertainment for the men of the town by rom the beginning of time until the 1890s, live featuring a piano player and girls performance was the only choice to be made by (dancers/singers/whatever). Women had their pianos Fan individual looking to be “entertained” or “up in the parlor, their quilting/sewing bees as well as lifted” or “removed from everyday life.” Such a choice community dances. was totally dependent on where you lived and your financial condition. The Greeks had their theatre and It was during the Industrial Revolution (1750-1850) dance which all who lived nearby were free to attend. that humans in general began to seek “fun” as an The Romans had their chariot races and gladiator actual goal. See, VHS newsletter, Vol 5 May 2011 games in any town large enough to have a “Circus or “Mankind Learns to Play” for a greater in-depth look at Colosseum” (as such arenas were called) also free to this phenomenon. By the 1830s, the American working those living nearby. Through all of time, the more or middle classes who could afford a low ticket price wealth you had, the better your seat. saw an increase in local rudimentary theatres/performance spaces where the tours of Outside of the two great classical cultures, the lower minstrel troupes, dramatic plays, or even the classes had free fun with a community dance or occasional full orchestra (The Thomas Orchestra – gathering. European villagers could enjoy a religious 1864-1889) began to stop by while on “tour.” If passion play (15th century) or the Italian Commedia these same working/middle class folk happened to dell’arte (16th century), both of which generally live in a big city such as New York, Chicago, toured from village to village, often performing Philadelphia, Pittsburgh, Boston, San Francisco, and th outdoors for any and all who stopped by. The St. Louis during the last three decades of the 19 audience might be asked to contribute by way of century, then these theatres were becoming more and passing of the “hat,” but that usually came after the more ornate as the local wealthy (primarily, business event and was fairly voluntary. Those with a little men) began to compete for the bragging rights of spending money in London could join the wealthy in having helped build the latest and most impressive attending a Shakespearean play (16th -17 th century) by theatre or concert hall in their locality. Of course, standing during ornate and beautiful the entire play in also equated with the area set aside greater ticket prices. specifically for the “groundlings.” With regards to the rich Across America as – primarily, European well as Europe, nobility – once they the keepers of the came into existence, local bars or their ornate homes or saloons quickly “palaces” served as Early 1920s Radio learned that they their entertainment Very early TV 2 News From VHSource, LLC Vol 9 September 2012 venues, although they were certainly not exempt from totally free use of any sheet music they could lay the “building the biggest opera house or concert hall” their hands on. They paid only minimal, if any, fees syndrome. They sponsored their own acting and to a performer to sing and/or play. Victor Herbert dance troupes, their own orchestras, their own singers, and John Philip Sousa were among the first even their own composers, etc. – in short they did composers to see the problem with this “usage.” It most everything “in-house.” would take them long hours of talking in Washington until Congress passed the U.S. Copyright Law of The bottom line? These performances were all “live” 1909 which incorporated the term “mechanical and local. Ergo, the level of competition for attention rights” into the language to cover the unfair practice stemmed only from how many such “live” venues of neither asking nor compensating the composer for were in close proximity and your financial/class his/her work in the making of any recording. status. The little village had one venue perhaps or was simply close to a town that had one. The bigger the Last month we explored the next major threat to town, the more venues and competition. In the case of “live” performance to arrive on the scene – the early the nobility, there was little competition beyond their beginnings of the “film” industry. “Moving pictures” wealthy relations, and besides they weren’t selling were a huge novelty introduced primarily to tickets anyway – they were simply entertaining Americans during the Columbian Exposition of themselves. 1893 in Chicago. See VHS newsletter Vol 8 August 2012, “Creativity Runs Rampant, The Birth of the Film In the VHS Newsletter Vol 3 March 2011, “Let the Industry,” for a closer examination of this industry. By New Age Begin,” we explored the first real threat to the time Nickelodeons began sprouting up after 1905, live performance in the birth of the “recording” the cost of this entertainment was suddenly only $.05 industry. Once that industry moved into the recording (the “nickel” of the name) as compared to a couple of of music – even 1 minute’s worth – composers, dollars for a live performance. Again, was this a producers, and performers could see that this threat? Only if one truly believed anything would phenomenon might not be good for “live” business. ever come of these “moving pictures.” By the 1920s, that question was soundly answered, and the threat By 1900, cylinder producers had perfected the “3 was full blown as film became firmly established. minute” offering and were not shy about recording Soon “moving pictures” began pulling audiences anything and everything they felt like recording. The from “live” performances, especially as long as the business everyone was concerned about was the sale movie ticket cost remained far lower than the live of “sheet music” or the hard copies of a composer’s theatre ticket price – a condition that continues to this songs. This sheet music industry provided composers day. with the primary means of making actual money from their work. If you wanted to play a song at home, you This month we take a look at the beginnings of the bought a copy of the next two threats to “live” performance solely because sheet music. both radio and television had their origins pre-1930 Fortunately, the player and would quite quickly prove to be the primary devices for recorded danger for the world of “live” entertainment – cylinders cost a bit of another phenomenon existing right into our time in money. Was this a 2012. Attending a film would safely remain an event threat? Perhaps. to attend outside of the home until the last 5-20 years with the advent of cable, iPads, Kindles, Nooks and The major portion the Netflix. However, radio and television would very recording producers left quickly settle directly into the home and make out of their production entertainment simply a dial away for even the poorest cost equation was families. “permission of the Herbert and Sousa with new copyright holder” and Just as many inventors contributed to the recruit Irving Berlin in Washington circa 1908 their costs reflected a development of film and appeared to spend far more 3 News From VHSource, LLC Vol 9 September 2012 time and effort squabbling over who did what when, used that sound (a “spark gap”) to generate sounds so the same observation applies to the development of which could be detected up to 500 meters away - radio which stems from early work on the telephone. again without a wire to carry them. His work led We haven’t mentioned the telephone per se since it is eventually to that crystal radio detector which would not really a vehicle of performance, although some be used for the world's first radio transmitter and might dispute that. The invention of the telephone receiver. involved yet another set of multiple, competing individuals, but most sources seem to agree that Of course, Thomas A. Edison (1847-1931) and his Alexander Graham Bell (1847-1922) was awarded Edison Laboratory employees at Menlo Park, New the first patent by the American authorities on an Jersey, were working in the same field and applied in electric telephone in 1876. That patent became the 1885 for a patent on an electrostatic coupling system basis for all succeeding telephone patents in America. between elevated terminals. Again, we find strange We raise this date as radio seems to have developed terminology but the patent was on non-connected directly from both work done on the wired telegraph terminals (wireless). This particular patent was to systems (1855) as well as the telephone itself. become so important that the Marconi Company would later purchase its rights from Edison simply to According to Wikipedia, the first avoid lawsuits. name that surfaces with regards to radio is David Edward Hughes In St. Louis, Missouri in 1893 Nikola Tesla (1856- (1831-1900) a British scientist, 1943) was making devices for his experiments in professor of music, musician electricity and in an address that same year to the (harpist) and inventor who is Franklin Institute (1824) and the National Electric credited with inventing the first Light Association (1885), Tesla described all the commercial telegraph system in elements which would eventually be used in radio 1855. He then moved on to the systems prior to the invention of the vacuum tube. David Edward carbon microphone, teleprinter, NOTE: Tesla was constantly at odds with Edison over who Huges spark-gap radio, crystal radio as did what when in the field of electricity.
Recommended publications
  • From Early Trade and Communication Networks to the Internet, the Internet of Things and the Global Intelligent Machine (GIM)
    Advances in Historical Studies, 2019, 8, 1-23 http://www.scirp.org/journal/ahs ISSN Online: 2327-0446 ISSN Print: 2327-0438 From Early Trade and Communication Networks to the Internet, the Internet of Things and the Global Intelligent Machine (GIM) Teun Koetsier Department of Mathematics, Faculty of Science, VU University, Amsterdam, The Netherlands How to cite this paper: Koetsier, T. Abstract (2019). From Early Trade and Communi- cation Networks to the Internet, the Inter- The present paper offers a sketch of the history of networks from the Stone net of Things and the Global Intelligent Age until the present. I argue that man is a creator of networks, a homo reti- Machine (GIM). Advances in Historical culorum. Over the course of time more and more networks were created and Studies, 8, 1-23. https://doi.org/10.4236/cm.2019.81001 they have become increasingly technologized. It seems inevitable that they will all be incorporated in the successor of the Internet of Things, the Global Received: December 21, 2018 Intelligent Machine (GIM). Accepted: January 29, 2019 Published: February 1, 2019 Keywords Copyright © 2019 by author(s) and History of Networks, Global Intelligent Machine Scientific Research Publishing Inc. This work is licensed under the Creative Commons Attribution International License (CC BY 4.0). 1. Introduction http://creativecommons.org/licenses/by/4.0/ Open Access Although we nowadays also use the word tool in a more general sense, tools and machines are traditionally physical devices invented to perform a task. They have a material existence and they operate on the basis of the laws of physics.
    [Show full text]
  • A Cursory Historical Overview on the Evolution of Wireless Communications
    A Cursory Historical Overview on the Evolution of Wireless Communications Magdalena Salazar-Palma*, Senior Member, IEEE, and Tapan K. Sarkar**, Fellow, IEEE *Signal Theory and Communications Department, Universidad Carlos III de Madrid, Spain, e-mail: [email protected] ** Electrical Engineering and Computer Science Department, Syracuse University, USA, e-mail: [email protected] Abstract — This presentation offers a historical overview on also demonstrated that inductive loading of the circuit the evolution of field theory for wireless communications. improved its performance. In 1855 French engineer Jean- Index Terms — History, wireless, radio, communications. Mothée Gaugain studied the rectifying action between two metal balls in an evacuated chamber, producing the first I. INTRODUCTION Electric Valve. In 1861, Scottish physicist and mathematician, James Electricity and magnetism are as old as human civilization. Clerk Maxwell (Fig. 4), the father of electrical engineering, The Chinese navigated the Indian Ocean using magnetite wrote to British scientist Michael Faraday (Fig. 4), indicating floating on mercury, around 1000 BC. The Baghdad battery that he has vindicated his theory on action at a distance and have (Fig. 1) was radio carbon dated to 250 BC, long before the reached the conclusion that light was electromagnetic in nature Italian physicist Alessandro Giuseppe Antonio Anastasio using dimensional analysis. Maxwell could still be called the Count Volta (Fig. 1) constructed his pile in 1799. During the father of electrical engineering and the greatest scientist of the seventeen and the eighteen century a number of experiments last century even if he would have not done any work on and inventions were carried out by scientists all over the electromagnetic theory! He provided a general methodology world.
    [Show full text]
  • Radiocomunicação
    DANE AVANZI SÃO PAULO 2013 DEDICATÓRIA Dedico este livro a meu pai, Dary Bonomi Avanzi. Começou sua carreira como radiotelegrafista de es- trada de ferro e está na ativa até hoje, atualizado e renovado a cada dia. Fundador do Grupo Avanzi, me prescreveu na prática cotidiana os ensinamentos que ora compartilho com os leitores deste livro. Ensina como um mestre. Presto homenagem também a dois monumentos das telecomunicações brasileiras: Padre Roberto Landell de Moura, o inventor do rádio, e Cândido Mariano da Silva Rondon, o marechal dos sertões. O espírito desbravador une meus três homenageados. Sou fascinado pela história dos Bandeirantes. Mas só recentemente descobri que a data consagrada aos heróis paulistas é 14 de novembro. O dia em que nasceu meu pai. Nada é por acaso. 1 Índice 2 3 4 5 6 7 8 9 10 11 12 História Telégrafo, Telex e cabo submarino Conceitos de radiocomunicação Radiocomunicação convencional Periféricos as estrelas ocultas Conceitos importantes Sistemas de radiocomunicação Tecnologia digital Radiocomunicação digital: a nova fronteira Tecnologia wireless Sustentabilidade e meio ambiente Demandas do mercado de radiocomunicação Normas reguladoras 6 PREFÁCIO Após muitos anos no setor de telecomunicações, testemunho o sur- gimento de uma obra inédita e útil aos profissionais deste segmento, assim como a alunos e professores de cursos técnicos. O livro nos conduz a uma viagem dos primórdios aos avanços da tecnologia que suporta o complexo de telecomunicação brasileiro. Estimo que no Brasil exista um número expressivo de usuários desses serviços, considerando pessoas físicas, empresas de todos os portes e os mais variados segmentos empresariais, como taxistas, transportadores aéreos e terrestres.
    [Show full text]
  • Padre Landell De Moura E O Primeiro Transmissor-Receptor De Voz Sem fio
    Faculdade Pit´agoras Departamento de Engenharia Curso de Engenharia El´etrica Carlos Guerra Lima Padre Landell de Moura e o primeiro Transmissor-Receptor de voz sem fio Londrina 2008 Faculdade Pit´agoras Departamento de Engenharia Curso de Engenharia El´etrica Carlos Guerra Lima Padre Landell de Moura e o primeiro Transmissor-Receptor de voz sem fio Trabalho de Conclus~ao de Curso orientado pelo Prof. Fernando Ciriaco Dias Neto intitulada \Padre Landell de Moura e o primeiro Transmissor-Receptor de voz sem fio” e apresentada `aFaculdade Pit´agoras,como parte dos requisitos necess´ariospara a obten¸c~ao do T´ıtulode Graduado em Engenharia El´etrica. Orientador: Prof. Fernando Ciriaco Dias Neto Londrina 2008 Ficha Catalogr´afica Guerra Lima, Carlos Padre Landell de Moura e o primeiro Transmissor-Receptor de voz sem fio. Londrina, 2008. 61 p. Trabalho de Conclus~aode Curso | Faculdade Pit´agoras.Curso de Enge- nharia El´etrica. 1. Transmissor. 2. Luz. 3. Pioneiro. 4. Radiodifus~ao.5. Voz I. Faculdade Pit´agoras. Curso de Engenharia El´etrica. II. Padre Landell de Moura e o primeiro Transmissor-Receptor de voz sem fio. Carlos Guerra Lima Padre Landell de Moura e o primeiro Transmissor-Receptor de voz sem fio Trabalho de Conclus~aode Curso apresentado ao Curso de Engenharia El´etrica da Faculdade Pit´agoras,como requisito parcial para a obten¸c~aodo t´ıtulode Graduado em Engenharia El´etrica. Comiss~aoExaminadora Prof. Fernando Ciriaco Dias Neto Faculdade Pit´agoras Orientador Prof. Everaldo Rbeiro Brinhole Faculdade Pit´agoras Prof. Luciano Bento Dantas Faculdade Pit´agoras Londrina, 7 de dezembro de 2008 Dedico este estudo ao meu filho Ant^onio, a minha esposa F´atima e a minha M~aeNadyr Agradecimentos Agrade¸coa todos os que possibilitaram a execu¸c~aodo trabalho: Ivan Dorneles, Marco Aur´elioMoura, Prof.
    [Show full text]
  • O E-Mail Ficou Balzaquiano
    Mas lá se vão 30 anos desde O e-mail ficou seu nascimento, no computador do engenheiro Ray Tomlinson, em 1971 . Tomlinson trabalhava na balzaquiano BBN, uma empresa contratada em 1968 pelo Departamento de Estado dos Estados Unidos para ajudar a Cheio de qualidades e com alguns poucos construir a Arpanet, a precursora da defeitos, o e-mail ganhou o planeta Internet. Ele escreveu o primeiro e tornou-se indispensável ferramenta programa de e-mail e o batizou de de trabalho do mundo moderno. SNDMSG (send message, ou enviar A bem da verdade, ele só começou mensagem, em inglês) e escolheu o a ser realmente usado em massa a partir sinal gráfico@ (arroba) para separar de 1995, quando a Internet passou a ser o nome do destinatário do lugar vista como algo útil e fácil de ser utilizada para onde vai a mensagem - na por um grande número de pessoas. língua inglesa,@ significa at (em). "O símbolo era muito pouco usado e o achei perfeito para meu Criador programa", contou Tomlinson Tomlinson: "O primeiro uso em numerosas do e-mail em red e anunciou sua existência" mensagem à distância 1837 (64 quilômetros). O norte-a mericano Sam uel Morse exibe O escocês Alexander O alemão Heinrich e testa o primeiro Graham Bel i, radicado Rudolf Hertz apa re lho telegráfico nos Estados Unidos, descobre as ondas com fios a uma inventa o telefone. eletromagnéticas, distância de SOO metros. A primeira frase trabalho que permite Em 1840, cria um dita foi para seu o desenvolvimento alfabeto telegráfico assistente, Tom Watson: do rádio, da televisão e quatro anos depois "Watson, venha aqui, e do radar.
    [Show full text]
  • Compact Multiport Antennas for High Spectral Efficiency Motivation from Energy Considerations Lessons from Early Wireless History Design Aspects
    EuCap 2013 8 April 2013 Compact Multiport Antennas for High Spectral Efficiency Motivation from Energy Considerations Lessons from Early Wireless History Design Aspects Rodney Vaughan Sierra Wireless Chair in Communications IEEE VTS Distinguished Lecturer S I M O N F R A S E R U N I V E R S I T Y School of Engineering Science Simon Fraser University Recent projects • Mammalian implanted antennas • Capacity maximization for digital systems • Multi-user MIMO: How many antennas? • Antenna evaluation using physics-based simulation • Antenna elements: basics of dipole • Multi-element antenna theory and metrics • Multi-faceted arrays • Multipath propagation and signal processing in sonar • Wireless location algorithms • Channel phase for estimating the Rice factor • Spatial interference suppression (automatic noise control) in acoustics – same as wireless S I M O N F R A S E R U N I V E R S I T Y School of Engineering Science Synchronization • Preliminaries (2 minutes) • Part I Motivation of MEAs from energy considerations (~10 min) {Warning: dry!} • Part II How did we get here? A glimpse of early wireless and lessons (~15 min) • Part III Design aspects for MEAs for MIMO communications (~10 min) • Total packet size: ~40 min • Tutorial style Early practical projects - signal processing & antennas Real- time audio Signal clean MIMO DSP hardware Earthquake analyzer Compact handset MIMO antenna Design & testing Shaped reflector design Outdoor propagation tests: in-line monopoles MIMO uses multiple element antennas (MEAs) to improve communication performance. Single user N=3 MIMO at 450MHz. (PEL, New Zealand, 1987) Observations: • Worked well in “ideal” environments, but unconvincing in most environments • Capacity efficiency pretty lousy compared to limits.
    [Show full text]
  • Trayectoria Tecnológica Web Y El Orden Digital En Latinoamérica: Reflexiones Históricas Desde Brasil.1
    Trayectoria tecnológica Web y el orden digital en Latinoamérica: reflexiones históricas desde Brasil.1 Cristian Berrío-Zapata Doctorando en Ciencias de la Información de la Universidad Estadual Paulista Júlio de Mesquita Filho (UNESP), Facultad Resumen de Filosofía y Ciencia, campus de Marília . Magister en Administración de Empresas La emergencia del orden digital renovó el ideal civilizador victoriano y afianzó de la Universidad Nacional de Colombia . un orden mundial de dependencia tecno económica: el modelo centro-periferia. Diplomado en Gestión de la Universidad de La nueva gran narrativa global es la urgencia de la transformación digital de Rouen, Francia . Especialista en Gestión de la todas las sociedades; un sueño perseguido irreflexivamente por los pueblos de Tecnología y Competitividad de la Pontificia la “periferia”, y convertido en un choque entre sociedades informacionalmente Universidad Javeriana, Bogotá, Colombia . “ ” y “ ”. Latinoamérica como “periferia”, no participó del desarrollo de Graduado en Psicología en la Pontificia frías calientes Universidad Javeriana, Bogotá, Colombia . la tecnología informática. Adicionalmente, su legado histórico ha dificultado la Becario del programa de doctorado apropiación de la misma. Este artículo examina las circunstancias históricas de PAEDEX\AUIP de la UNESP - Brasil . desarrollo de las redes digitales y sus consecuencias desde la construcción social cristian .berrio@gmail .com del discurso, recuperando el desarrollo de estas tecnologías, los tímidos intentos de Brasil en participar de este proceso y la entrada de las redes informáticas en María José Vicentini Jorente la región. Se encontró que el estado de la investigación en el área es débil, y se Doctora en Ciencias de la Información alerta sobre las posibles consecuencias de ello.
    [Show full text]
  • MOURA, Landell De *Inventor. Roberto Landell De Moura Nasceu
    MOURA, Landell de *inventor. Roberto Landell de Moura nasceu em Porto Alegre no dia 21 de janeiro de 1861, filho do capitão Inácio José Ferreira de Moura e de Sara Mariana Landell de Moura, descendente de escoceses. Foi o quarto de uma prole de 14 filhos. Estudou as primeiras letras com o pai e em seguida cursou o Colégio de Nossa Senhora da Conceição em São Leopoldo (RS). Após a conclusão dos estudos de humanidades, transferiu-se para o Rio de Janeiro para cursar a Escola Politécnica. Em companhia do irmão Guilherme, seguiu para Roma, matriculando-se a 22 de março de 1878 no Colégio Pio Americano e na Universidade Gregoriana, onde estudou física e química. Completou sua formação eclesiástica em Roma formando-se em teologia, e foi ordenado sacerdote em 1886. Também em Roma iniciou as pesquisas que o levariam à invenção pioneira do rádio, na época denominada transmissão da voz à distância sem fio condutor. Quando voltou ao Brasil, foi residir no Rio de Janeiro, no Seminário de São José. Foi algumas vezes substituto do coadjutor do capelão do Paço Imperial e manteve palestras de caráter científico com dom Pedro II. Em 20 de fevereiro de 1887 regressou ao Rio Grande do Sul. Foi nomeado capelão da igreja do Bonfim e, ao mesmo tempo, professor de história universal no Seminário Episcopal de Porto Alegre. Em 1892 foi para São Paulo, onde seria vigário nas cidades de Santos, Campinas e São Paulo, sucessivamente. Em Campinas continuou seus estudos científicos. Em 1893 foi ao Rio de Janeiro solicitar à Igreja subvenção para suas experiências de telegrafia e telefone sem fio.
    [Show full text]
  • Tehnoloski Okvir Komunikacija U Savremenom Drustvu
    Sveznadar Komunikacije u savremenom društvu Miroslav Mihaljišin Теmа 4: Теhnоlоški оkvir kоmunikаciја u sаvrеmеnоm druuštvu Prenos informacija Prеnоs infоrmаciја kао nајčеšći оblik sаvrеmеnе kоmunikаciје, mоžе sе, kаkо u istоriјi, tаkо i dаnаs оdviјаti: • u prоstоru, pri čеmu је pоtrеbnо mаksimаlnо smаnjiti vrijеmе pоtrеbnо zа prеnоs оdrеđеnе infоrnаciје • u vrеmеnu, о čеmu svjеdоčе trајni zаpisi Rаni nаčini kоmunikаciја nа dаlјinu Rаni оblici tеlеkоmunikаciја uklјučuјu dimnе ssignаlе i bubnjеvе. Bubnjеvi su sе kоristili u Аfrici, Nоvој Gvinејi i Јužnој Аmеrici, dоk su dimni signаli bili kоrišćеni u Sjеvеrnој Аmеrici i Kiini. U srеdnjеm vijеku, nizоvi tоrnjеvа nа vrhоvimа brdа su kоrišćеni kао nаčin zа prеnоšеnjе pоrukе. Оvаkаv prеnоs је imао mаnu dа је mоgао dа prеnеsе sаmо јеdаn znаk infоrmаciје. Јеdаn оd pоznаtih primjеrа оvаkvоg оbаvjеštаvаnjа је biо tоkоm nаpаdа Špаnskе аrmаdе nа Еnglеsku, kаdа је niz tоrnjеvа prеniо signаl оd Plimutа dо Lоndоnа. Gоdinе 1792, frаncuski inžеnjеr Klоd Šаpе је sаgrаdiо prvi fiksаn sistеm zа vizuеlnu tеlеgrаfiјu (sеmаfоrskа liniја) izmеđu Lilа i Pаrizа. Меđutim, оvi sеmаfоri su zаhtjеvаli оbučеnе оpеrаttоrе i skupе tоrnjеvе nа intеrvаlimа оd dеsеt dо 30 km. Kао pоsljеdicа upоtrеbе еlеktričnоg tеlеgrаfа, pоsljеdnjа kоmеrciјаlnа sеmаfоrskа liniја је nаpuštеnа 1880. 1 Tema 4 Теhnоlоški оkvir kоmuunikаciја u sаvrеmеnоm društvu Uvod Теlеkоmunikаciје Теlеkоmunikаciје su оblаst lјudskе dеlаtnоsti kоја sе bаvi prеnоšеnjеm pоrukа izmеđu dvа ili višе kоrisnikа nа udаlјеnim mjеstimа, оbičnо putеm еlеktričnih signаlа. Telegraf Telegraf (od grčke riječi tele, daleko, i graphein, pisati) je uređaj odnosno sistem za prenos poruka na veliku udaljenost. Za razliku od telefona, telegraf ne preenosi glas nego pojedina slova uz pomoć određenog koda. Optički telegraf Prvi telegrafski sistemi su koristili optički prenos poruka.
    [Show full text]
  • Landell De Moura, Father Roberto 1861 -1928
    L Landell de Moura, Father Roberto 1861 -1928 Brazilian Wireless Pioneer In the 189os and early 19oos, Father Roberto Landell de During 1893 and 1894 he demonstrated these ideas in the Moura produced a series of wireless communication devices center of the city of Sao Paulo. He transmitted sound without that were as original in their day as they were unrecognized. wires between two of the highest points in the city, over five miles apart, using a type of three -electrode conductor lamp. Origins These demonstrations occurred in the presence of the British Consul and years before similar demonstrations were made by Roberto Landell de Moura was born in Porto Alegre, the capi- Marconi and de Forest. tal of Rio Grande do Sul, on z1 January 1861. Graduating as a Despite presenting his inventions before a representative of distinguished student from a local Jesuit high school, he moved one of the most inventive and commercial countries in the to Rio de Janeiro to study at the Polytechnic Institute. Unable world, however, he failed to attract interest or investment. to pay tuition, however, he took a job as a store clerk. Worse, word about his strange, "diabolical" inventions In 1881 his brother, on his way to Rome to study for the aroused the suspicions of his parishioners. They invaded his priesthood, visited him; Roberto decided to accompany him rectory and destroyed his machines. and also become a priest. He studied theology at the seminary Undismayed, he rebuilt and refined them, by 1900 obtain- in Rome for students from the Americas and physics and ing Brazilian patent 3,z79 for a machine transmitting sound chemistry at the Gregorian University.
    [Show full text]
  • What Is Broadcasting? What Is Broadcasting?
    What is broadcasting? What is broadcasting? The beginning of radio at a frequency of one megahertz (1 MHz). These electromagnetic So, how can sound be transmitted by radio? The simplest way to do waves travel at the speed of light. (We now know that light itself is an it is to vary the strength (or amplitude) of the radio signal to match The first radio transmission was made in 1895. It did not carry audio electromagnetic wave.) Note that one full wave or oscillation involves the variation in amplitude of the audio signal. This process is called signals (voice or music) but consisted of just short bursts of a fixed two changes of direction. ‘amplitude modulation’ or AM. Note that the frequency of the transmitted radio frequency using Morse code. Morse code had been in use from radio signal is fixed; only its amplitude changes. A radio transmitter the 1840s to send messages via telegraph wires. The code consists of therefore does not actually transmit sound but only an inaudible short and long pulses, commonly known as dots and dashes, and may From Morse code to analogue radio electromagnetic wave. A radio receiver detects the radio frequency and be represented by electrical signals or flashes of light. For example, the Maconi’s original radio transmitters and receivers were intended to from the variation in its amplitude it can reconstruct the audio signal. code for ‘S’ is • • • and the code or ‘O’ is — — —. The code for SOS is replace wired telegraphy with wireless telegraphy. His radio signals ComReg is the statutory body responsible for the regulation therefore • • • — — — • • •.
    [Show full text]
  • Uva-DARE (Digital Academic Repository)
    UvA-DARE (Digital Academic Repository) Developing Radio Histories Kuitenbrouwer, V.; Luscombe, A.; Wijfjes, H. DOI 10.18146/tmg.593 Publication date 2019 Document Version Final published version Published in Tijdschrift voor Mediageschiedenis License CC BY-SA Link to publication Citation for published version (APA): Kuitenbrouwer, V., Luscombe, A., & Wijfjes, H. (2019). Developing Radio Histories. Tijdschrift voor Mediageschiedenis, 22(2), 1-7. https://doi.org/10.18146/tmg.593 General rights It is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), other than for strictly personal, individual use, unless the work is under an open content license (like Creative Commons). Disclaimer/Complaints regulations If you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: https://uba.uva.nl/en/contact, or a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible. UvA-DARE is a service provided by the library of the University of Amsterdam (https://dare.uva.nl) Download date:23 Sep 2021 1 Vincent Kuitenbrouwer, Anya Luscombe, Huub Wijfjes Developing Radio Histories In at least fifteen countries worldwide a century of radio is, or will be, celebrated in 2019 and following years. Looking in more detail at these celebrations, it is obvious that several techno- logical breakthroughs connected to wireless transmission of sounds are considered to be the most important events structuring radio history.
    [Show full text]