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butalik [34]
3 years ago
8

1) What do u meant by photophone ?

Biology
2 answers:
Viefleur [7K]3 years ago
7 0

Answer:

June 3, 1880. You may know that a telephone uses electricity to send voice communications. However, you may not know that the man who invented the telephone, Alexander Graham Bell (1847-1922) had another invention that used light to transmit sound. He called it the photophone.

Explanation:

Debora [2.8K]3 years ago
3 0

jab Nye miljate hai tab purane boj lagne lagte hai !

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