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Solar oven

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 (longer ... »
greenhouse, trap, rays, wavelengths, penetrate
Note
Difficulté
Durée2h 0 min.
Date15.05.2013
Langue

Solar boat

Building a solar boat helps to understand how photovoltaic solar cells can be used to produce electricity. Toy using solar cells represent often machines that do not exist or which are not logical. It is not uncommon indeed to find toys of helicopters or windmills powered by photovoltaic cells. ... »
photovoltaic, windmills, powered, geneva
Note
Difficulté
Durée3h 0 min.
Date14.05.2013
Langue

Savonius wind turbine

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
Durée3h 30 min.
Date14.05.2013
Langue

Steam engine

The construction of a small steam engine helps to understand how this technology can tranform heat into a mouvement.   If some water is heated in a closed container and evaporates, a pressure is created inside. This pressure is due to the increase of water volume during its transformation into ... »
steam, heated, container, evaporates, turbine
Note
Difficulté
Durée2h 30 min.
Date14.05.2013
Langue

Steamboat

Building a steamboat helps to understand how it is possible to tranform heat into a mouvement. If some water is heated in a closed container and evaporates, a pressure is created inside. This pressure is due to the increase of water volume during its transformation into steam (steam takes about ... »
steamboat, heated, container, evaporates, steam
Note
Difficulté
Durée3h 0 min.
Date14.05.2013
Langue
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