alb9004936
Edison's Phonograph. In 1877 Thomas Edison filed a patent on a machine that could record and play back sound. He demonstrated this simple device by reciting the poem Mary had a little lamb.
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Titre: Edison's Phonograph. In 1877 Thomas Edison filed a patent on a machine that could record and play back sound. He demonstrated this simple device by reciting the poem Mary had a little lamb.
Légende: Voir la traduction automatique
Edison's Phonograph. In 1877 Thomas Edison filed a patent on a machine that could record and play back sound. He demonstrated this simple device by reciting the poem Mary had a little lamb. His voice caused the membrane in the microphone to vibrate. A stylus attached to the membrane drew grooves of varying depth in a sheet of tinfoil wrapped around a rotating cylinder which moved along the microphone with the stylus.
Edison's Phonograph. In 1877 Thomas Edison filed a patent on a machine that could record and play back sound. He demonstrated this simple device by reciting the poem Mary had a little lamb. His voice caused the membrane in the microphone to vibrate. A stylus attached to the membrane drew grooves of varying depth in a sheet of tinfoil wrapped around a rotating cylinder which moved along the microphone with the stylus.
Crédit: Album / World History Archive
Autorisations: ? Autorisation de modèle: Non - ? Autorisation de propriété: Non
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Taille de l'image: 4123 × 5086 px | 60.0 MB
Taille d'impression: 34.9 × 43.1 cm | 1623.2 × 2002.4 in (300 dpi)
Mots clés: COMMUNICATION • PHONOGRAPHE
