What makes a liquid rhythmically jump in a running blender?

AI Thread Summary
The discussion centers on the phenomenon of liquid "jumping" in a running blender, attributed to the resonance of standing waves. It is clarified that in a blender, the waves do not travel in opposite directions; instead, the vibrations of the blender create waves that reflect off the walls of the container. The areas where these waves meet and produce constructive interference are where the liquid exhibits the jumping motion. This understanding highlights the role of the blender's vibrations in generating the observed behavior of the liquid.
bulloughclan
What makes a liquid rhythmically "jump" in a running blender?

What makes a liquid rhythmically "jump" in a running blender?
 
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resonance of standing waves
 
blender

But in a blender the waves aren't traveling in opposite directions, are they? So how do you get resonance of standing waves?
 
I'm assuming you're talking about the blender vibrating, and the waves are coming off the walls of the container portion of the blender. Where the waves meet and make constructive interference, is where the liqiud jumps.
 
Oh yeah. That makes sense now. Thank you for your answers.
 

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