Yeah, I was trying to sneak a physics course in here. Guilty. I stumbled upon this video somehow and, although i was not interested at the start. i kept watching it and then it dawned upon me that this was good information. If not just interesting.
You never know when information like this can be applied, but it is the shear fact that it is a fact (a phenomenon of physics) that deems it to be important. If you follow me here, the physics involved lend to the operation of a water pump impeller and the operation of a venturi. It is a little convoluted and quite in depth, but it does explain a lot.
I am not sure how useful the information can be to everyone, but I do know that the more of this type of information you are exposed to, the better you will be at understanding the physics of the ordinary life.
Gordy