Saturday, 11 February 2017

fluid dynamics - How can two seas not mix?


How can two seas not mix? I think this is commonly known and the explanation everyone gives is "because they have different densities".


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What I get is that they eventually will mix, but this process takes a long time.


From what you see in this picture you can see that they have a clear separation line as if you would mix water and oil.


Basically what I'm skeptical about is the clear separation line between them. Putting highly salted water and normal water in the same bowl will cause almost instant mixing. Can you get the same effect as shown in the picture in a bowl at home ?


I'm looking for a more complete answer than just that they have different densities. Thanks.





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