 | This project helps to understand how the greenhouse effect can be used to 'trap' the heat of the sun. The sun's rays (short wavelengths of visible light) penetrate through the glass of the oven and heat the elements inside. When this heat is reissued as infra-red radiations (longer wavelengths) ... »
greenhouse, trap, rays, wavelengths, penetrate
| | Note |  | | Difficulté |  | | Durée | 2h 0 min. | | Date | 22.07.2022 | | Langue(s) | |
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 | 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 | 22.07.2022 | | Langue(s) | |
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 | This project is a good way to discover the power of the Sun, and the use of a renewable energy to cook without polluting or increasing deforestation. The portable solar cooker uses 3 principles: the greenhouse effect, the concentration of light with reflective panels and the ability of black ... »
renewable, polluting, deforestation, greenhouse, reflective
| | Note |  | | Difficulté | | | Durée | 2h 30 min. | | Date | 20.07.2022 | | Langue(s) | |
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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 | 20.07.2022 | | Langue(s) | |
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 | This project of a solar oven was part of a contest organised by the Juvene Foundation and the Swiss television (RTS-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 ... »
experiment, insulating, rays, greenhouse, panels
| | Note | | | Difficulté |  | | Durée | 2h 0 min. | | Date | 20.07.2022 | | Langue(s) | |
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