Hacker NewsSep 22

First Ultrasonic Chef's Knife Vibrates 40,000X/Second for Easy Cutting

https://www.cnet.com/home/kitchen-and-household/worlds-first-ultrasonic-chefs-knife-vibrates-40000-times-per-second-for-easy-cutting/

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'World's First' Ultrasonic Chef's Knife Vibrates 40,000 Times Per Second for Easy Cutting

Seattle Ultrasonics' $399 C-200 promises to slash cutting force in half with blade vibrations that you can't see, hear or feel.

CNET