|
Samuel Thomas Soemmering's electric telegraph, 1809
With Samuel Thomas Soemmering's invention of the electrical telegraph the telegraphic transmission of messages is no longer tied to visibility, as it is the case with smoke and light signals networks. Economical and reliable, the electric telegraph became the state-of-the-art communication system for fast data transmissions, even over long distances.
Click here for an image of Soemmering's electric telegraph.
http://www.heise.de/tp/deutsch/inhalt/co/2335...
|
|
|