eli5: explain the meaning behind “pumps create flow not pressure and resistance to flow creates pressure.”

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Isn’t this kind of the same thing as saying the pump creates the pressure?

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Anonymous 0 Comments

Say you put a pump in the middle of a huge swimming pool, it will create a flow of water around the pump. The water won’t really be at a higher pressure than the rest of the pool though.

Now suppose you put the pump in a pipe. The pressure is there. So it can’t be the pump alone that creates the pressure. The pipe must be doing something.

On the other hand, if you *just* had the pipe with no pump, the pressure wouldn’t be there. So really it’s a bit of both.

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