Inventions: from Semaphores to Telephones

from BALLOONCAST - Go Ahead School · host Go Ahead School

Levels: all For centuries, people have tried to send signals over long distances using bonfires and flashing mirrors. Listen to the episode and learn more about the evolution of means of communication. Have fun!

Episode metadata supplied by the publisher feed · Published Aug 27, 2020

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Inventions: from Semaphores to Telephones

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This episode was published on August 27, 2020.

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