Xylophone Jug

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    How to determine how much water is left in an opaque jug? It’s possible by weight, but it is possible as the artist Mac Funamizu offers with the help of a metal handle and a “built-in” wooden hammer. The more water in the jug, the higher the sound will be made.

    Yes, the option to “make the jug transparent” is not suitable, because this concept is intended for the blind.

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    via tuvie.com

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