Bubble Telegraph Bashny.Net

This is one of the first attempts to use electricity to transmit information when the power is already there, and what to do with it is not yet entirely clear.





In each bubble Telegraph letters and numbers correspond to your electrical wire. At the receiving station wires were removed in a glass jar aquarium with acidified water. When through the wire on the transmitter current is supplied, then the appropriate contact at the receiver due to electrolysis, hydrogen bubbles were allocated and argued that it was transferred to this letter.

A little historical background
When in 1809 Austria invaded Bavaria, Bavarian King Maximilian asking for help to his ally Napoleon. France at the time arranged by the optical telegraph towers, and French units come to the aid very quickly.

King Maximilian impressed with the optical telegraph, but that is highly dependent on the weather and time of day. The King gives an indication of the Bavarian Academy of Sciences to think about alternative and member of the Academy Dr. Semmering (Sömmerring) decides to try an electric current.

Such attempts by the time more than 50 years , but Semmering uses the latest scientific discoveries. Firstly, the recently invented electrochemical cell - voltaic pile. Secondly, even though the laws of electrolysis Faraday had not yet formulated, but the phenomenon of hydrogen evolution by passing a current through the water has been known for several years. Semmering moves from basic science to applied.

How It Works
The caller connect two signal wires to the battery.



At the receiving station with two corresponding contacts (leftmost in the "aquarium") stood out bubbles that accumulate under the "spoon". When the gas has enough, spoon pops up the ball at the other end fell and hit the call. Telegrapher woke up and realized that someone wants to contact him.

The transmitting current source connected in series with the letters that I wanted to share, and take the following for those where there are bubbles and recorded message.

Using the current in both directions, Semmering can transmit simultaneously two letters. On the sending end of one wire was connected to the positive and the other to the negative pole of the voltaic pile. Accordingly, on the receiving end first written lettering wires, is separated from the more gas - hydrogen, and then the second wire is separated from the half of bubbles - oxygen.



Replica:



System experienced performance at a distance of several kilometers, a copy was sent to the French Academy of Sciences, неоднократно demonstrated crowned heads, removed the figures, got rid of the signal line ... But it did not. In 1820 Oersted observed deviation of the compass needle near the conductor, and the development of the telegraph went the other way.

Source: geektimes.ru/post/248562/