 | Building this project helps to understand how wind turbines work and generally how to transform a mechanical movement into electricity. This principle can be found in devices we use every day (bicycle dynamo, car alternator, etc...). The same principle is also used by most of our electricity ... »
turbines, transform, bicycle, dynamo, alternator
| | Note |  | | Difficulté |  | | Durée | 2h 0 min. | | Date | 18.03.2013 | | Langue(s) | français deutsch english |
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 | Bulding a bicycle electricity generator helps to understand how it is possible to produce electricity from a magnet, a copper wire coil and a movement. This technique found in traditional bicycle dynamos is also used in electric power stations. Unlike a traditional bicycle dynamo, this project ... »
bicycle, generator, magnet, wire, coil
| | Note |  | | Difficulté |  | | Durée | 3h 0 min. | | Date | 20.12.2012 | | Langue(s) | français deutsch english |
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 | This DIY project was part of a contest organised by the Juvene Foundation and the Swiss television (TSR-découvertes) during Summer 2011 . The idea was to propose an easy experiment which needed only extremely cheap and easy to find materials and which would encourage children to express their ... »
experiment, insulating, rays, greenhouse, panels
| | Note | | | Difficulté |  | | Durée | 2h 0 min. | | Date | 12.12.2012 | | Langue(s) | français deutsch english |
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 | 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 | 12.12.2012 | | Langue(s) | français deutsch english |
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 | Building a parabolic solar grill helps to understand the principle of sunlight concentration. This technique is already used in experimental solar power plants. Parabolic mirrors focus the Sun's rays on black pipes in which water circulates. The heated water expands and turns into steam ... »
parabolic, sunlight, mirrors, rays, pipes
| | Note |  | | Difficulté | | | Durée | 0h 30 min. | | Date | 12.12.2012 | | Langue(s) | français deutsch english |
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