WebMar 10, 2016 · Photo: Alexander Graham Bell, c. 1914 – c. 1919. Source: Wikimedia Commons. The truth is there was no single inventor of the telephone. In addition to Bell, a number of great minds worked hard on the concept and contributed to the marvel we call the telephone, including Thomas Edison, Elisha Gray, Innocenzo Manzetti, Antonio Meucci, … WebBy 1861 Johann Philipp Reis of Germany had designed several instruments for the transmission of sound. The transmitter Reis employed consisted of a membrane with a …
Johann Philipp Reis Biography - German scientist and inventor
Web1861 - A simple type of electronic loudspeaker was developed by Johann Philipp Reis - a teacher at Friedrichsdorf, Germany. The speaker was crudely able to reproduce noise and just an experiment. 1876 - … WebReis, Johann Philipp. Born Jan. 7, 1834, in Gelnhausen; died Jan. 14, 1874, in Friedrichsdorf, near Homburg. German inventor. Reis taught physics at the Gamier … biosecurity notifiable organisms order 2016
History and Types of Speakers - Edison Tech Center
WebJohann Philipp Reis a German scientist, teacher and... Receiver part of a telephone made by Johann Philipp Reis which was supplied with a glass dome cover. Telephone made … Reis was born in Gelnhausen, Germany, the son of Marie Katharine (Glöckner) and Karl Sigismund Reis, a master baker. His father belonged to the Evangelical Lutheran church. Reis's mother died while he was an infant, and he was raised by his paternal grandmother, a well-read, intelligent woman. At the age of six Reis was sent to the common school of his home town of Gelnhaus… WebPhilip Reis was born to German parents of Jewish origin (on his fathers side), both of whom belonged to the Evangelical Church. His father was born to German farmers. . dairy heifer growth chart