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DENJIRO: Here, we have a glass bottle filled with water. Let me break this bottle.
When you hit the bottle very hard, the water inside remains in place. The next moment, the water hits the bottom of the bottle with force, and it causes the bottle to shatter. The impact of the water, or water hammer, was what caused the bottle to break.
Here is an interesting device. This is a pump that allows water to travel to a higher altitude than its source, but it doesn't use any external sources of power. Let's turn on the device.
By using the pump, we were able to transfer the water up 3 meters. Let me explain how this works. When the plug located at the outlet is closed, it stops the flow and increases pressure. This phenomenon is called water hammer. The pressure caused by water hammer sends some water to a higher altitude through a check valve in the middle. This is called a water hammer pump. The plug at the outlet opens and closes on its own. There is no external power used here either.
Here, I have a model that works using the same principle. The plug closes as it gets pulled in by the water flow. When the plug covers the outlet, the water stops flowing, and a spring causes the plug to open again.
NARRATION: The water hammer pump uses no external power source. How strange!
DENJIRO: I hope energy will bring you all happiness. Our magic word is "Happy Energy!"