 | This DIYs project helps to understand how hydropower (energy from water in motion) can be transformed into electricity. Hydropower is a renewable energy regenerated through the water cycle. The Sun powers this cycle by evaporating water (from e.g. rivers, lakes or seas). This water condenses ... »
hydropower, renewable, regenerated, evaporating, lakes
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 | This project helps to understand how an electric motor works (how it is possible to create a movement with electricity). Many electrical appliances use this technique (mixer, cd player, hair dryer, etc.). By generating electricity from the Sun, this DIY shows that there are alternative energy ... »
motor, appliances, dryer, generating, renewable
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 | Inspired by an American tin toy of around 1916, this educated monkey performs multiplications without any mistake. His feet show the two numbers to multiply and a hole above his hands shows the correct result. The mechanism of this DIYs project is very interesting and can be studied and ... »
multiply, hole
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 | Building a vegetable oil stirling engine helps to demonstrate different scientific properties: Expansion and condensation of the air under the influence heat Principle of operation of a piston Conversion of thermal energy into motion Use of a bio-fuel This DIYs shows a simple prototype of ... »
stirling, condensation, piston, prototype, steam
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 | The Pet Star water rocket car is an environmental friendly vehicle. A Pet bottle is used to stock air and water. The air is pressurised with a bicycle pump . The water is expelled because of this great pressure and pushes the car forward (action<>reaction principle). This DIYs project helps to ... »
rocket, pressurised, bicycle, pump, pushes
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