 | The construction of a solar hot water panel helps to understand how it is possible to heat water with the Sun. The basic principle is to circulate water in a black pipe placed behind a glass exposed to the Sun. Thanks to the greenhouse effect and the black colour that absorbs most of the Sun's rays, it is ... »
circulate, pipe, greenhouse, absorbs, rays
| | Note |  | | Difficulté |  | | Durée | 2h 30 min. | | Date | 31.05.2013 | | Langue(s) | |
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 | This projects helps to understand how a wind generator works and more generally how it is possible to transform mecanical energy into electricity. This principle can be found in many devices that we use every day (bicycle dynamo, car alternator, etc.) and is the way we produce most of our ... »
generator, transform, bicycle, dynamo, alternator
| | Note |  | | Difficulté |  | | Durée | 3h 30 min. | | Date | 14.05.2013 | | Langue(s) | |
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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
| | Note | | | Difficulté | | | Durée | 10h 0 min. | | Date | 06.05.2013 | | Langue(s) | |
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 | This water rocket DIYs project shows how you can stock energy and illustrates the action-reaction principle. With the help of a bicycle pump, air is compressed in a tank (bottle) containing some water. By releasing the air, the water is expelled and the rocket is launched high in the air. To ... »
rocket, illustrates, bicycle, pump, compressed
| | Note | | | Difficulté |  | | Durée | 3h 0 min. | | Date | 03.05.2013 | | Langue(s) | |
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