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The telephone gets 150 years old!

Today, the phone gets 150 years old. Johann Philipp Reis, a german physicist and inventor
brought out a device that was able to transmit sound using an apparatus that simulates the
ear. The receiver is getting the emitted electric pulses from the sending unit that has a tube
to catch the sound. in 1861 he publicly presented his communication-invention.

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October 25, 2011Netspark No Comments »
FILED UNDER :Computer , Curiosities , Gallery , Ideas
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