Inspired by Tesla (who isn’t?), “Tunnel Vision” is an interactive sound and light installation in the shape of the 100 Hz buzz tone produced by electrical generators. When visitors put their hands in the opening, they alternate the sound and animated light patterns by altering the magnetic field surrounding the installation. Check out the video for the full effect.
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Sorry but it’s 50 hz in most of Europe and 60Hz here in the US.
He said “buzz tone”, not “mains frequency”.