Johann Philipp Reis, German inventor

Numéro d’image : 12446688
Johann Philipp Reis, German inventor
Johann Philipp Reis (1834-1874). 1867 illustration of the German inventor Johann Philipp Reis. Reis is best known for inventing a form of early telephone. He built a prototype telephone in 1860, but he found it difficult to interest people in his invention. It was demonstrated in Germany in 1862 and in the USA in 1872. The telephone Reis had invented was rudimentary and only transmitted sound faintly. The practical development of the telephone was achieved by others, such as Alexander Graham Bell.
Licence : Droits gérés
Crédit: Science Photo Library / Collection Abecasis
Taille de l’image : 2443 px × 3921 px
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