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Video: water appears frozen in sine wave

David Pescovitz at 11:32 am • •

A beautiful video of sound curiously affecting a stream of water, visible thanks to a camera recording at 24 frames-per-second. The speaker generates a 24 hz sine wave that vibrates the water while the camera recording at 24 fps make the stream appear to "freeze." (Thanks, Koshi!)

The science of magic —

The old cups-and-balls "shell game" trick so effectively exploits the human brain's ability to be deceived that, even when the cups are see-through, you can still get played. — Maggie •