Wat is geluid en hoe kun je het ZIEN?

[Anna @akrasko97]

The Secret Study Of Seeing With Sound | Sonic Magic | Spark

https://www.youtube.com/watch?v=MMose0qwAJw (41:58)

Sound has the power to charm, annoy, and even change history. Sonic Magic: The Wonder and Science of Sound reveals the historic force, promise, and potential of sound – and a strange phenomenon called cymatics that has created a new scientific mystery. Sonic Magic explores how sound has shaped our history, introducing us to fields of acoustic ecology and also research labs where sound is eliminating cancer tumours and much more.

[Anna @akrasko97]

Incredible slow-motion photography reveals the hallucinatory beauty of sound in water — and whiskey

 

From: Business Insider https://www.businessinsider.nl/water-slow-motion-video-standing-waves-cymatics-2018-5?international=true&r=US

 

After a long work day, most of us happily collapse into a couch and binge-watch our favorite show.

But Linden Gledhill, a Philadelphia-based pharmaceutical biochemist, retreats to his basement lab. There, he builds custom gear so that he can record the beautiful, complex, and sometimes very weird intersection of science, art, and nature. <…>

For the past couple of years, Gledhill has been playing with a tiny dish of liquid that sits on a speaker. Called a cymascope, it’s designed to create and tune repeating patterns of waves, like those formed in wine by rubbing the rim of a crystal glass to make it vibrate or “sing.” These cyclical ripples, also called cymatics, travel far faster than human eyes can see, so he uses ultra-high-frame-rate cameras slow them down and record their secrets.

“It allows you to see the individual vibration states throughout the cycle. That’s pretty cool. Typically you don’t get to see that,” Gledhill told Business Insider. “Typically what you see is a fixed pattern or a changing pattern based on the frequencies you play through the liquid.” <…>

“They’re highly complex, and the phenomenon creates huge ranges of patterns,” Gledhill said. Higher frequencies result in more intricate ripples in the water that distort and reflect the LED light in wild ways.

Frequencies toward the lower range of human hearing, at around 20 Hertz (cycles per second), produce larger patterns. Gledhill thinks this one resembles an alien head.

This one looks a bit like a wormhole in space.

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Video’s en foto’s van geluidsgolven op wateroppervlak – Cymatics – door Linden Gledhill  – Flickr

https://www.flickr.com/photos/13084997@N03/albums/72157664382425281/with/40234739831/

 

Here’s a photo of Gledhill’s cymascope rig at his home.

 

Watch Gledhill’s full video cut of different Cymatic patterns below.

https://www.youtube.com/watch?v=APcBqk_UujA  (1:28)

Photography site of Linden Gledhill  https://www.lindengledhill.com/

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