As i understand it, the OP is lowering his standing desk with his coffee on it. here's where i found it:https://www.reddit.com/r/oddlysatisfying/comments/em92re/the_vibration_in_my_coffee_when_lowering_varidesk/ …
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Faraday Waves are non-linear standing waves •When the container vertically vibrates above its 'critical' frequency, the instability forms standing waves on the initially flat surfacepic.twitter.com/k7bTAmeJ0H
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How did you do this? Is it a sim? Did you slow down the video? What is your capture rate? *Wants to know*
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As i understand it, the OP is lowering his standing desk with his coffee on it. I believe it's in real time. here's where i found ithttps://www.reddit.com/r/oddlysatisfying/comments/em92re/the_vibration_in_my_coffee_when_lowering_varidesk/ …
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We did this experiment in high school physics lab. The speaker plays a vibrations of fixed frequency. When the amplitude is low the wave has a radial symmetry. Above a certain amplitude the symmetry breaks and the surface covers with hexagonal structures.
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The hexagonal cells look very similar to Rayleigh-Benard convection in overheated liquids.
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right ok cool but are those the same waves that indicate the looming presence of a T. Rex, or nah?pic.twitter.com/0M0RaA8DP9
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A cool thing about Faraday waves, they are subharmonic. Meaning their (time) period is twice the one of the excitation. This can give pretty movies with a well-tuned stroboscope
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I've never seen that before, and I've drank a lot of coffee.
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Might be dumb question, but what does "non-linear" mean here? In what sense are the usual standing waves linear?
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Imagine you throw a rock into a pond. Usually waves propogate out in radial fashion, with larger and larger concentric circles. These waves aren’t like that. Hope this helps!
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