Spouting Bowl

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Spouting Bowl

An old chinese bowl with someone putting their hands on it

PIRA: 3D40.51

An old Chinese bowl can be used to demonstrate resonance, nodes and antinodes. By filling the bowl halfway with water, wetting the palms and then rubbing the two handles on the side the bowl can be made to vibrate. When the resonant frequency is achieved the bowl will make a moaning sound and water will splash in four places on the edge (antinodes) and be still in the middle (node).