Tag Archives: Acoustics

The Right Vibrations Will Make Particles in Liquid Break Into a Circle Dance

Chances are you’ve seen the gorgeous patterns that sound waves produce when sand is sprinkled on a vibrating metal plate. Now French physicists have produced inverse versions of these patterns using microbeads suspended in a liquid. They described their work in a recent paper in Physical Review Letters.

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We’ve Never Heard Whales Make This Haunting Sound Before

You’ve probably watched enough Animal Planet to know that humpback whales communicate using clicks and whistles. But put on a pair of headphones and listen to the video above. Beneath the shrill chatter we’ve all heard before, there’s a much lower-pitched tone, eerily reminiscent of a human heartbeat.

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