This is what knowing physics well means.
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@marcioaleks Good old Archimedes.
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This is what knowing physics well means.
@marcioaleks I don't know physics that well (you sure it's not magic?), ELI5 please
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This is what knowing physics well means.
@marcioaleks That is so cute
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This is what knowing physics well means.
@marcioaleks The look on those children's faces at the end of the video!
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@marcioaleks Good old Archimedes.
@isisevrinen @marcioaleks Archimedes? How would you explain it to the kids in the room? (Just asking, you know, for the kids...)
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@swift @marcioaleks Quite easy: if a rather big person steps in a bath filled to the rim with water in a flat, the flat underneath gets leakage.
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This is what knowing physics well means.
The excitement of the kids watching when it works …
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@swift @marcioaleks Quite easy: if a rather big person steps in a bath filled to the rim with water in a flat, the flat underneath gets leakage.
@isisevrinen @marcioaleks oh that's why the water overflows but why does the orange come to the top?
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@isisevrinen @marcioaleks oh that's why the water overflows but why does the orange come to the top?
@swift @isisevrinen @marcioaleks
That's the question, and Archimedes has nothing to do with it.
When a fluid spins in a container like this (what the hand does is make the whole fluid spin), you get a secondary recirculation. It's called Bodewadt pumping, and it is related to Ekman pumping.
The recirculation dives nears the vertical walls, goes inward toward the bottom, and then flows up in the middle, exactly the behaviour of the fruit in the video. -
@swift @marcioaleks Because it feels like it?
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@swift @isisevrinen @marcioaleks
That's the question, and Archimedes has nothing to do with it.
When a fluid spins in a container like this (what the hand does is make the whole fluid spin), you get a secondary recirculation. It's called Bodewadt pumping, and it is related to Ekman pumping.
The recirculation dives nears the vertical walls, goes inward toward the bottom, and then flows up in the middle, exactly the behaviour of the fruit in the video.@natchouf interesting, thanks!
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