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Résultats de la recherche

Chemical battery

Making a battery helps to understand how a chemical reaction can produce electricity. It shows also that in a battery there is no real stock of electricity, but the chemical products needed to generate some. It is important to understand how batteries work as they are more and more used in our daily ... »
batteries, pads, polluting, kilowatt-hour, mains
Note
Difficulté
Durée3h 0 min.
Date16.05.2013
Langue(s)

Portable solar cooker

This DIYs 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
Durée2h 30 min.
Date15.05.2013
Langue(s)

Parabolic solar cooker

The construction of a parabolic solar cooker helps to understand how it is possible to concentrate the solar rays to reach higher temperatures. This technique is used in experimental power plants in California and France. These plants use a field of mirrors that concentrate rays to a single point ... »
parabolic, rays, mirrors, tank, turbines
Note
Difficulté
Durée0h 0 min.
Date15.05.2013
Langue(s)

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(s)

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(s)
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