Bell's telephone transmitter,artwork

Numéro d’image : 11904569
Bell's telephone transmitter,artwork
Bell's telephone transmitter. Historical artwork of Alexander Graham Bell's first telephone transmitter. Patented in 1876,it used existing telegraph lines to transmit and receive sound. The mouthpiece (far left) doubled as the earpiece for the call's receiver,but this two way system was later improved as it was not practical to speak and listen concurrently. Bell was born in Scotland in 1847,emigrating to Massachusetts,USA,where he worked on a system to teach deaf mutes to speak. He also patented a system to send more than one message at a time along existing telegraphic systems. It was this improvement that lead him to invent the telephone
Licence : Droits gérés
Crédit: Science Photo Library / Terry, Sheila
Taille de l’image : 3815 px × 2033 px
Model Release : Non requis
Property Release : Non requis
Restrictions : -

Prix pour cette image À partir de 45 €

Produit vendu
(Calendrier, Carte postale, Carte de vœux, Impression sur textile, Packaging etc)
À partir de 45 €
Usage commercial
(Affichage, Annonce presse, Annonce TV, Carte, Digital - hors rés. sociaux, Digital - rés. sociaux etc)
À partir de 45 €
Éditorial
(Digital, Journal, Livre, Livre pratique, Magazine, Télévision etc)
À partir de 60 €
Usage non-commercial
(Digital - hors rés. sociaux, Digital - rés. sociaux etc)
À partir de 120 €

Mots clés

;