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Topic: Wireless telegraphy

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In the News (Mon 23 Apr 18)

  Info and facts on 'Wireless telegraphy'   (Site not responding. Last check: 2007-11-07)
Wireless telegraphy is the practice of remote writing (see telegraphy (Communicating at a distance by electric transmission over wire)) without the wires normally involved in an electrical telegraph (additional info and facts about electrical telegraph).
Wireless telegraphy devices started appearing in the 1860s (The decade from 1860 to 1869).
The ultimate development of wireless telegraphy was telex (A character printer connected to a telegraph that operates like a typewriter) on radio.
www.absoluteastronomy.com /encyclopedia/w/wi/wireless_telegraphy.htm   (429 words)

 The Electrician (1910): Wireless Telegraphy for Marine Intercommunication   (Site not responding. Last check: 2007-11-07)
Wireless telegraphy is now regarded as an essential part of the equipment of large ocean-going passenger vessels.
This is the route where wireless telegraphy has been most developed, owing in a large measure to the chain of shore stations established by the Marconi Company in Great Britain, Canada and the United States.
A message was sent and received by another steamer equipped with a Marconi wireless installation and relayed by her on to England, the result being that in less than an hour we had a reply from London giving the desired information, and enabling the vessel to proceed with her cable-laying operations without delay.
www.copperas.com /titanic/electrician/marconi.html   (3118 words)

 RReview: Wireless   (Site not responding. Last check: 2007-11-07)
Wireless is a methodical account of the early development of wireless telegraphy and the inventors who made it possible.
Wireless fills the gap created by Hugh Aitken, who described at length the early development of wireless communication, but who did not attempt "to probe the substance and context of scientific and engineering practice in the early years of wireless" (p.
Wireless begins with a brief discussion of the 1995 centennial of the invention of radio by Marconi and a rebuttal by the British historians who oppose this claim.
mcel.pacificu.edu /jahc/JAHCVII3/reviews/steward.HTML   (656 words)

 Wireless Telegraphy Act - Wikipedia, the free encyclopedia
The Wireless Telegraphy Act is the name given to the foundation of all communication laws in the United Kingdom.
Its name is derived from the invention of electric telegraphy and the subsequent invention of wireless transmission.
Wireless telegraphy was followed by wireless telephony when the telephone system of wired speech transmission was first applied to the telegraph system and then to wireless telegraphy.
en.wikipedia.org /wiki/Wireless_Telegraphy_Act   (135 words)

 Encyclopedia: Wireless telegraphy   (Site not responding. Last check: 2007-11-07)
Telegraphy (from the Greek words tele = far and graphein = write) is the long-distance transmission of written messages without physical transport of letters, originally over wire.
Guglielmo Marconi Guglielmo Marconi, GCVO (25 April 1874 – 20 July 1937) was an Italian electrical engineer and Nobel laureate, known for the development of a practical wireless telegraphy system commonly known as the radio.
Hertz in the early 1800s, it was clear to most scientists that wireless communication was possible, and many people worked on developing many devices and improvements.
www.nationmaster.com /encyclopedia/Wireless-telegraphy   (1266 words)

 Wireless telegraphy - Wikipedia, the free encyclopedia
The so-called father of wireless telegraphy is considered by many to be Jozef Murgas, for his revolutionary work in the late 1880s.
Addressing the Franklin Institute in Philadelphia and the National Electric Light Association, he described and demonstrated in detail the principles of wireless telegraphy.
Telex on radio was invented in the 1940s, and was for many years the only reliable way to reach many distant countries (See telegraphy for more information).
en.wikipedia.org /wiki/Wireless_telegraphy   (400 words)

 Read about Wireless telegraphy at WorldVillage Encyclopedia. Research Wireless telegraphy and learn about Wireless ...   (Site not responding. Last check: 2007-11-07)
Wireless telegraphy is the practice of remote writing (see telegraphy) without the wires normally involved in an
James Bowman Lindsay gave a classroom demonstration of wireless telegraphy to his students.
Nobel Prize in physics for "contributions to the development of wireless telegraphy".
encyclopedia.worldvillage.com /s/b/Wireless_telegraphy   (285 words)

 Dáil Éireann - Volume 17 - 30 November, 1926 - WIRELESS TELEGRAPHY BILL—SECOND STAGE.
Walsh): Wireless Telegraphy in Saorstát Eireann is at present controlled by an Act passed in 1904, a temporary measure, and since then it has been changed from year to year by this supplementary Wireless Act and the Act of 1906.
Wireless on ships is already within the scope of the Act of 1904, and it is proposed to extend control to cover wireless in aircraft.
The Merchant Shipping (Wireless Telegraphy) Act, 1919, is administered by the Minister for Industry and Commerce, and it will be necessary to obtain his sanction to any regulation respecting wireless on ships to which this Act applies.
www.oireachtas-debates.gov.ie /D/0017/D.0017.192611300022.html   (5634 words)

 OTB - "Forgotten" Pioneers of Wireless, Part 5 - Karl Ferdinand Braun
The range of the underwater wireless telegraphy system still was limited to relatively short distances due to other factors.
Braun found that the crystal detector provided no improvement over the coherer when the wireless telegraphy messages were automatically recorded on a moving strip of paper, as was the normal practice at the time.
It was only through this that the so-called "long distance telegraphy" became possible, where the oscillations from the transmitting station, as a result of resonance, could exert the maximum possible effect upon the receiving station.
www.antiquewireless.org /otb/forgoten.htm   (2642 words)

 Commercial Wireless Telegraphy (1903)
Briefly, the Marconi system of telegraphy consists of setting in motion, by means of his transmitter, electric waves, which pass through the ether (a colorless, rarefied, unknown agent, supposed to fill all space) and are received on a wire or wires strung in the air.
Wireless telegraphy simply means the unharnessing of electricity which has long been transmitted only by wire.
A school of wireless telegraphy has been established in Babylon where telegraph operators are instructed in the use of the delicate instruments.
earlyradiohistory.us /1903marc.htm   (3826 words)

 Rules concerning the Control of Wireless Telegraphy in Time of War and Air Warfare, Drafted by a Commission of Jurists ...
In time of war, the operation of wireless stations continues to be organized, so far as possible, in such manner as not to interfere with the service of other wireless stations.
A neutral Power is not bound to restrict or to forbid the use of the wireless stations situated within its jurisdiction, save as far as this may be necessary to prevent the transmission of information, intended for a belligerent, concerning the military forces or military operations, and save the case provided for in Article 5.
Diverting wireless distress signals or distress messages, prescribed by the International Conventions, from their normal and legitimate use, constitutes a violation of the laws of war for which its author is personally responsible in accordance with international Law.
www1.umn.edu /humanrts/instree/1923a.htm   (4029 words)

 Wireless Telegraphy   (Site not responding. Last check: 2007-11-07)
Wireless Telegraphy, a system of sending telegraph messages without a conducting wire.
At the present time wireless telegraph stations are the rule in all cities of importance.
A wireless call for help sent over the waters brought prompt assistance, and a sister ship 120 miles away caught the call and came to the rescue and brought the passengers safely back to port.
www.factopia.com /aiton-encyclopedia-vol5/wireless-telegraphy.htm   (441 words)

 Seemotive Wireless Telegraphy on Sea
First it was used for cable telegraphy, then for wireless telegraphy and later on even for optical signalling using e.g.
In Germany wireless telegraphy was researched by Adolf H. Slaby of the AEG company and Karl F. Braun from Siemens.
In 1906 the 1st international wireless telegraphy conference was held in Berlin, Germany.
www.seemotive.de /html/funker.htm   (1612 words)

 5. Radio at Sea (1891-1916)
Wireless Telegraphy on Mail Steamers, from the November 19, 1904 Electrical Review, featured Emile Guarini's overview of radiotelegraphic operations by mail packets running between Ostend, Belgium and Dover, England.
Wireless Tracking of Fish, from the December 1, 1906, Electrical World, reported that six Atlantic Coast vessels of The Fisheries Company had been outfitted with DeForest equipment, so they would be able to "notify each other and all assemble without delay to the location where the fish are being caught".
Wireless telegraphy with its magic powers was to wrest from the sea its ancient terror of silence and to give speech to ships which had been mute since the dawn of navigation."--Karl Baarslag, SOS to the Rescue, 1935.
earlyradiohistory.us /sec005.htm   (1725 words)

 Wireless Telegraphy Act 1998
(7) Any reference in a wireless telegraphy licence granted before the commencement of this section to section 2(1) of the Wireless Telegraphy Act 1949 shall be construed, in relation to any time after that commencement, as a reference to this section.
(2) The terms that may be included in a wireless telegraphy licence by virtue of subsection (1) include, in particular, terms providing that the licence may not be revoked or varied except with the consent of the licence holder or in such other circumstances and on such grounds as may be specified in the licence.
In section 6 of the Continental Shelf Act 1964 (wireless telegraphy) for "and regulations made thereunder" there is substituted "and the Wireless Telegraphy Act 1998 and any regulations made under either of those Acts".
www.opsi.gov.uk /acts/acts1998/1998006.htm   (2296 words)

 Marconi's Cape Breton Radio Stations   (Site not responding. Last check: 2007-11-07)
Wireless communications were attempted as early as the 1860's by Mahlon Loomis in the United States, but a clear understanding of the basic principles of radio only emerged after the theoretical work of the Scottish physicist James Clerk Maxwell in the 1860's and the experimental work of the German physicist Heinrich Hertz in the 1880's.
Before the end of 1895 he transmitted wireless signals a distance of over a mile, an event that many consider to be the birth of radio.
This was the Marconi system of wireless telegraphy, and it remained the principal system of radio communications until about the beginning of World War I in 1914.
www.newscotland1398.net /marconi100/marconi1.html   (4483 words)

 Valdemar Poulsen - Federal Telegraph Company Arc Wireless Station - 1912
San Francisco was the site of one of the first major wireless stations in the United States with the founding of the "Poulsen Wireless Corporation of Arizona" in 1910 and, later, the Federal Telegraph Company.
Primary force behind the commercial development of Valdemar Poulsen's arc wireless transmission method was Cyril Frank Elwell (1884- 1963), a Stanford student who convinced the inventor to license his patents in the United States to him.
Wireless telegraphy was of great military importance to the United States, and the Navy comissioned station FNN, at Arlington, Virginia, in 1912, with Poulsen arc transmitters.
www.sfmuseum.org /hist/poulsen.html   (1189 words)

 Dáil Éireann - Volume 17 - 07 December, 1926 - ADDITIONAL ESTIMATE. - WIRELESS TELEGRAPHY BILL, 1926—MONEY ...
It is anticipated that the licence fees, and such other revenues as may be obtained as, for instance, from the tax on wireless instruments, should suffice, or very nearly suffice, to pay the whole expense of maintaining the broadcasting service, and that contributions from the general taxpayer, if any at all, should be small.
You are really imposing duties on the public at large, those who want wireless to the extent of £20,000.
The Minister for Posts and Telegraphs stated that he was going to erect a wireless station for the Gaeltacht.
www.oireachtas-debates.gov.ie /D/0017/D.0017.192612070038.html   (868 words)

 The Wireless Telegraphy (Limitation of Number of Licences) Order 2003
"wireless telegraphy licence" means any licence granted under section 1 of the Wireless Telegraphy Act 1949[4] other than a television licence as defined in section 1(7) of that Act.
The availability of wireless telegraphy licences is limited at these frequencies by the technical frequency assignment criteria set out in the Technical Frequency Assignment Criteria for Television and Sound Broadcasting published by the RA[7].
The availability of wireless telegraphy licences is limited at these frequencies by the technical frequency assignment criteria set out in the RA publication applying to the frequencies concerned[12].
www.opsi.gov.uk /si/si2003/20031902.htm   (3742 words)

 Social Research: Marconi's error: the first transatlantic wireless telegraphy in 1901   (Site not responding. Last check: 2007-11-07)
The messages were sent from a wireless station in Poldhu, a small town located at the southwest end of England.
Most literature on transatlantic wireless telegraphy (e.g., Jacob and Collier, 1935; Tarrant, 2001; Weightman, 2003) emphasizes that scientists such as Lord Rayleigh and Henri Poincare dismissed Marconi's plan because of the theory that electromagnetic waves propagated only linearly.
Other scientists and engineers also conjectured about the possibility of transatlantic wireless telegraphy, and all these conjectures were based on the surface transmission of electromagnetic waves.
www.findarticles.com /p/articles/mi_m2267/is_1_72/ai_n13807653   (1346 words)

 4. Personal Communication by Wireless (1879-1922)
Wireless Telegraphy, by Charles Mulford Robinson in the June, 1902 The Cosmopolitan, speculated about the effect unchaperoned communication would have on romance, and, more practically, suggested the new technology would ensure up-to-the-minute shopping lists.
And not too be left behind in the race to sell worthless stock, United Wireless, in R. Burt's The Wireless Telephone from the November, 1908 issue of that company's The Aerogram, foresaw broad advances in both personal communication and broadcasting, which would actually come years after the company had disappeared into bankruptcy.
Also appearing in the same magazine was William T. Prosser's Wireless Telephone for Everybody, from the April, 1912 issue, which reviewed William Dubilier's high-frequency spark system, while the September, 1913 issue featured Edward J. McCormack's favorable report on Victor Laughter's work, also using high-frequency spark, in The Voice From the Air.
earlyradiohistory.us /sec004.htm   (1249 words)

 Collins Wireless Telephone
Wireless Telegraphy, though still in it’s infancy, held great promise for the future.
In May, 1903, one of these men, A. Frederick Collins, formed the Collins Marine Wireless Telephone Co, and soon after changed the name of the company to Collins Wireless Telephone Co. His first system was known as the “Inductive System” and featured coils of insulated wire four to five feet in diameter.
Unfortunately the money received was used by Collins and his partners to cover the expenses of marketing their stock and to promote further speculation, not for building the assets of the company for the benefit of the stockholders.
www.sparkmuseum.com /COLLINS.HTM   (743 words)

 Radio Telegraphy
Surprisingly, during the remaining fourteen years of his life, Maxwell, who was a skillful experimentalist, did not attempt to verify the existence of the electromagnetic waves that his theory predicted.
(1844-1940) is revered in France as the inventor of wireless telegraphy.
In 1890, Branly, a professor of Physics at the Catholic University of Paris, discovered that when exposed to even a distant spark transmission field, loose zinc and silver filings would cohere and provide a path of increased conductivity that could be used to detect the presence of the transmission.
www.ee.umd.edu /~taylor/Electrons2.htm   (521 words)

 Wireless telegraphy - Encyclopedia, History, Geography and Biography
Wireless telegraphy - Encyclopedia, History, Geography and Biography
The later derived system (which used multiple patents of Tesla's) that achieved widespread use was demonstrated by Guglielmo Marconi in 1896.
This encyclopedia, history, geography and biography article about Wireless telegraphy contains research on
www.arikah.com /encyclopedia/Wireless_telegraphy   (367 words)

 THE OUTLINE OF RADIO, Chapter 1: A Brief Historical Review
John Trowbridge, of Harvard University, in 1880 applied the Bell telephone to the study of Morse's scheme of wireless telegraphy by diffused electrical conduction through rivers or moist earth.
The new wireless art quickly gained an importance so great that it required a characteristic name to distinguish it from the earlier conduction and induction systems.
Heinrich Hertz, despite the fact that his work was limited to laboratory distances and that he did not suggest the use of his waves for telegraphy, is the pioneer whose experiments laid the foundation for radio as we now know it.
www.eht.com /oldradio/history/outline/Hogaxx.htm   (4163 words)

 Marconi in Newfoundland 1901   (Site not responding. Last check: 2007-11-07)
Although several scientists experimented with wireless signalling in the latter half of the nineteenth century, the principles of radio were not well understood before the theoretical work of the Scottish physicist James Clerk Maxwell and the experimental work of the German physicist Heinrich Hertz.
Some experimentation was done during this period with voice transmission, then called wireless telephony, but it would be a couple of decades before it was developed into the form of radio broadcasting that we are familiar with today.
He now believed that a regular transatlantic wireless telegraph service was feasible, and that it would compete favourably with the transatlantic telegraph cables because wireless did not require the laying of thousands of miles of expensive undersea cable.
www.newscotland1398.net /nfld1901/marconi-nfld.html   (4462 words)

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