This speaker uses dancing ferrofluid to visualize music

A speaker made by artist Dakd Jung, spotted by Gizmodo, visualizes music with ferrofluid, a liquid filled with tiny magnetic particles. The ferrofluid, a viscous black blob, reacts to an electromagnetic device and dances around in sync with the sounds being played.

The video shows Jung’s process for putting the speaker together: treating the glass container so the ferrofluid won’t stick, sanding the 3D-printed casing, and wiring up the electromagnetic device. The full prototype in action is a little less mesmerizing than his initial test that’s shown in the video because the blob breaks apart, but Jung says the speaker is still in development. He’s used ferrofluid in artworks before, including a huge ferrofluid panel and a ferrofluid...

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