Ferrofluid is quite a trippy magnetic fluid with ferrimagnetic particles that react to a changing magnetic field. It was invented in 1963 by Steve Papell for NASA. As it turns out, it can also be used to build speakers and visualizers with a venom style fluid that dances to the beat of your music. We have already covered a bunch of them here and on YouTube. This Walnut Wood Ferrofluid Sound Visualizer is also worth a look.
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4 Magnetic Fluid Ferrofluid Music Visualizers Compared 🟡 Gadgetify
This one is powered by a USB cable, so you don’t have to worry about charging its battery. It uses a microphone to capture the sound around it and translate it into motion for the liquid. This visualizer relies on a non-toxic nano iron fluid and pure water. It serves as a fun accessory for your favorite speaker.
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