¡Pide ayuda a tus amigos!

Páginas: 3 (615 palabras) Publicado: 20 de marzo de 2012
Patria y progreso
Inventions

Índice
1:cararula
2:índice
3:primer invento
4:información
5:segundo invento
6:cibergrafia

On the origins of television were exposed several mechanicalsolutions, such as the Nikon disc in 1910, but these mechanical systems were discarded in favor of fully electronic collection systems today.
In 1925, Scottish inventor John Logier Baird made ​​thefirst real experience using two disks, one in the emitter and the receiver, who were attached to the same axis so that its rotation was synchronous and separated by 2 mm.The first public televisionbroadcasts of the BBC in England conducted in 1927, and CBS and NBC in the U.S. in 1930. In both cases, mechanical systems and programs will not be issued with a regular schedule.
The first stationthat regularly scheduled programming was created in 1930 in Berlin by the local branch of the National Socialist German Workers Party, but those responsible for Nazi propaganda were not aware of thepossibilities of the medium and continued to use the radio.
The emissions program started in England in 1936, and the United States on April 30, 1939, coinciding with the opening of the Fair in New York.Scheduled broadcasts were interrupted during World War II and resumed when it ended.

Imagines

Nicolas-Joseph Cugnot (1725-1804), mechanical, military engineer, writer and French inventor, madethe big step, to build a steam car, originally designed to haul artillery pieces. The Fardi, as he called Cugnot, began circulating through the streets of Paris in 1769. It was riding a tricycle onthe front wheel a boiler and a vertical two-cylinder engine and 50 liters of displacement, the front wheel tractor and guideline was at once the two cylinders working directly on it. In 1770 he built asecond model, larger than the first, and could drag 4'5 tons at a speed of 4 km / h. With this version was produced which could be considered 'first car accident' of history, to be impossible, the...
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