Note 20 — TABLE DES MATIÈRES
Reading edition
Note 20: Voici ses propres paroles: «The articulation produced from the instrument (le récepteur à électro-aimant tubulaire) was remarkably distinct, but its great defect consisted in the fact that it could not be used as a transmitting instrument, and thus two telephones were required at each station, one for transmitting and one for receiving spoken messages.»[Retour au texte principal]