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Some explorations related to mechanical waves and sound. "Mechanical waves" and "Goop" are the most tuned results. They react like a stream when a finger is placed in it.
Funnily enough, these all stemmed from the cover of Joy Division's "Unknown Pleasures", which is itself a scan of pulsar data from the Arecibo Radio Observatory. There is certainly nothing mechanical about the source waves.
But it's not like we're using real data or physics anyway : )
It looked pretty, so it was a good target to shoot for.