This my entry for the Technological Advance Category :
Tide Mill
The tide mill is a medieval invention. It's a water mill build on sea shore. It's works with the effect of the tidal energy.
As the tide comes in, it enters the mill pond through a one way gate, and this gate closes automatically when the tide begins to fall. When the tide is low enough, the stored water can be released to turn a water wheel.
Thanks for watching !
