Johann Philipp Reis

Johann Philipp Reis in Friedrichsdorf (HE), Germany † 1874

Johann Philipp Reis was a self-taught German scientist and inventor. In 1861, he constructed the first make-and-break telephone, today called the R...

Johann Philipp Reis was a self-taught German scientist and inventor. In 1861, he constructed the first make-and-break telephone, today called the Reis telephone.

https://en.wikipedia.org/wiki/Johann_Philipp_Reis

Johann Philipp Reis
Copyright 2016 heaven.world

Most parts of the website heaven.world are protected by copyright and exclusively belong to the provider of the website. Copyrights of third parties are reserved. Further utilization for private usage is permitted with full acknowledgement of the source. Any other utilization, in particular the complete or partial reproduction of texts, graphics and other elements in electronic or printed form, is only permitted with prior written consent from heaven.world.