 | This solar pendulum demonstrates different scientific principles : Concentration of sunlight rays with reflectors Greenhouse effect and absorption of solar radiation by dark colours Expansion and contraction of water due to temperature changes Transformation of solar thermal energy into ... »
pendulum, sunlight, rays, reflectors, greenhouse
| | Note |  | | Difficulté |  | | Durée | 3h 0 min. | | Date | 27.11.2013 | | Langue(s) | |
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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. Unfortunately less bicycles are equiped with ... »
bicycle, generator, magnet, wire, coil
| | Note | | | Difficulté | | | Durée | 3h 0 min. | | Date | 24.05.2013 | | Langue(s) | |
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 | Building this DIYs 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 | 24.05.2013 | | Langue(s) | |
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 | Building this torch (flashlight) helps to understand how it is possible to transform mechanical energy into electricity. This type of transformation is achieved in most of our power plants. This DIYs project reveals all the components of an electric generator. By using a small electric motor ... »
torch, flashlight, transform, generator, motor
| | Note | | | Difficulté | | | Durée | 3h 0 min. | | Date | 16.05.2013 | | Langue(s) | |
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 | The use of sun energy is not limited to photovoltaic cells for electricity or solar thermal collectors for heating. Other ideas exist, often still experimental, like the solar chimney. A huge project of this type is planned in Australia with a tower 1 km high! The construction of a solar chimney ... »
photovoltaic, collectors, chimney, greenhouse, absorption
| | Note | | | Difficulté |  | | Durée | 3h 0 min. | | Date | 16.05.2013 | | Langue(s) | |
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