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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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2 jun 1875 año - Bell proves that telephones work

Descripción:

Watson happens to pluck one of the metal reeds that formed Bell's phonoautograph machine. This accidental move showed that a telephone could transmit sounds.

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Alexander Graham Bell

ByAlicia Gracidas-Guldan
20 dic 2018
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fecha:

2 jun 1875 año
Ahora mismo
~ 150 years ago
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