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		<property:Applications rdf:datatype="http://www.w3.org/2001/XMLSchema#string">C'est sur le même principe que fonctionne le gramophone, inventé par l’Allemand Émile Berliner en 1889, et qui est une amélioration du phonographe de Thomas Edison inventé en 1877.</property:Applications>
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Il n'est pas possible de reproduire cette expérience sur les compact disc (CD) bien que de la musique soit gravée dessus. Il est nécessaire d'utiliser un lecteur optique et non un lecteur avec une aiguille comme tête de lecture.</property:Deepen>
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*Fixe le cône avec du scotch.
*Traverse le cône (à proximité de la pointe) avec l'aiguille, laisse celle-ci en place en travers du papier (elle dépasse des deux côtés).
*Place l'ensemble "cône/aiguille" sur un disque en lecture (qui tourne)</property:Step_Content>
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