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1852 __ First direct message from London to Paris
Comment : The first direct message from London to Paris is sent. (David Miller)In June 1852, the submarine telegraph between Dover and Ostend was completed, and on the 1st of November the first electric communication was established direct between Great Britain and the continent of Europe. By a line of wires between London and Dover, via Rochester and Canterbury, in connection with the submarine cable across the straits of Dover, instantaneous communication is obtain between London, Paris, Sweden, Trieste, Cracow, Odessa, and Leghorn. The wires are also being carried onward to St. Petersburg; also to India, and into the interior of Africa. A project had been formed for constructing a submarine Telegraph between Great Britain and the United States. It is proposed to commence at the most northwardly point of Scotland, run thence to the Orkney islands, and thence by short water lines to the Shetland and the Feroe Islands. From the latter, a water line of 200 miles conducts the telegraph to Iceland, thence to Greenland, and acorss Davis's straits to Bryon's Bay, on the coast of Labrador. The entire length of the line is estimated at 2,500 miles - the submarine portion of it at 1,500 miles; and the expense of this great international work is estimated at £500,000. (in Friends’ Review, Philadelphia)
French comment : Paris est relié à Londres par un câble passant sous la Manche. (UTC Compiègne Jusque dans les années 1850, une partie des compagnies adopte l’heure de l’observatoire de Greenwich quand l’autre partie reste à l’heure de Londres. C’est le télégraphe qui permet de mettre en place l’heure de Greenwich com)1852, 1er décembre, les équipements intermédiaires de Douvres et Calais sont supprimés pour établir une liaison directe entre les deux capitales. Les messages sont transmis en moins d'une heure entre les bourses de Paris et Londres au lieu de 3 jours auparavant. (Compiled from various sources)
Source : “A report of J.C.G. Kennedy, Superintendent of the Census, on Telegraphs”, In Friends’ Review, Philadelphia, Vol. VI, n°17, 1853, and In “Statement - Agricultural Productions, Value of Improved and Unimproved Lands, Agricultural Improvements, etc. - The United States”, p. 114; quoted by David Miller, “Din Timelines”, electronic publication, 1998-2004.
Urls : http://fr.wikisource.org/wiki/Télégraphie_électrique,_ses_développemens (last visited ) http://www.utc.fr/~tthomass/Themes/Unites/unites/infos/morse/Le%20code%20morse.pdf (last visited )

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