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1. Draw water up as a doctor does medicine with a syringe by valve A, meantime valve B open, valve C closed.
2. Let the water in the cylinder out. (valve B closed, valve C open)
3. Press valve A to the cylinder bottom, close valve C, open valve B.
4. Recycle the operation continually.
The experiment suggests E1=W(up)=G(water)h(1m),
E2=W(down)=G(water)H(9m),
The energy we get should be: E=E2-E1-W(other waste).
E2=9E1; W(other waste)=E1/1000
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