 | This DIYs project helps to understand how the greenhouse effect can be used to 'trap' and increase 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 ... »
greenhouse, trap, rays, wavelengths, penetrate
| | Note |  | | Difficulté |  | | Durée | 2h 0 min. | | Date | 03.02.2016 | | 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 | 27.11.2013 | | Langue(s) | |
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 | Apart from photovoltaic cells, there is another way to produce electricity with the Sun. This technique uses the Sun to heat water or air in a closed tank. High temperatures are reached by using parabolic mirrors which concentrate the Sun's rays. The heat increases the volume of water or air in the ... »
photovoltaic, tank, parabolic, mirrors, rays
| | Note |  | | Difficulté | | | Durée | 3h 0 min. | | Date | 05.11.2013 | | Langue(s) | |
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 | This DIYs 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 | 07.06.2013 | | Langue(s) | |
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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 | 31.05.2013 | | Langue(s) | |
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