3479291 Using a string telephone, 1878; (add.info.: A male and female are shown holding, and using a string telephone. Dated 1878. Two cups or tin cans were attached with a piece of string, the can would amplify the vibrations (voice) of the speaker, allowing the listener to hear from a distance.); Universal History Archive/UIG; out of copyright.

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TOP27536293

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達志影像

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RM

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須由TPG 完整授權

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