Recent content by amalgamma

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    Where does the energy come from in a canal lock?

    I think I grok the water cycle. I'd like to apologize for getting turned around back there---I got the entrance gate and the exit gate reversed in my head somehow. I also grok a lock. Your answer does help if I imagine using the same water over again. I'm still a bit baffled by the seeming...
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    Where does the energy come from in a canal lock?

    Right, which it would do anyway.
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    Where does the energy come from in a canal lock?

    What? At what point does the flow give up energy in a lock?
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    Where does the energy come from in a canal lock?

    I'm sure I'm being thick, but are you saying that the energy comes from the water that doesn't enter the lock? If you fill the lock with the same amount of water it would hold if the barge were there, its surface would be at a lower level, and more potential energy would have been lost than if...
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    Where does the energy come from in a canal lock?

    When the lock is full again, the water is back where it was, and in, say, a hydro dam, the water is slowed going through the turbine. In a lock , it simply flows there whether there is a load or not. And what kind of canal lock pumps water, when all you have to do is let the higher water in...
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    Where does the energy come from in a canal lock?

    And ...? The water would rise just the same if the barge weren't there.
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    Where does the energy come from in a canal lock?

    You can lift a zillion-ton ore barge 30 feet like magic, and nothing seems to have done the work. Help me get it.
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