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Vertical axis wind turbine

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
Durée2h 0 min.
Date24.05.2013
Langue(s)

Solar flashlight

Building a solar torch (flashlight) helps to understand how it is possible to store the energy of the Sun and use it later at night. photovoltaic cells transform the energy of the sun in electricity that can be stored in a rechargeable battery. Photovoltaic cells are now widely used and can be even ... »
torch, flashlight, photovoltaic, transform, rechargeable
Note
Difficulté
Durée2h 30 min.
Date17.05.2013
Langue(s)

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)

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)

Perpetual calendar

This calendar indicates the day of the week of every date between 1600 and 2299.   With it, you can know what day of the week you were born or if you will have the chance to celebrate your 50th anniversary on a Saturday.   This DIY project can be part of the study of calenders from the astronomical or ... »
astronomical
Note
Difficulté
Durée2h 0 min.
Date03.05.2013
Langue(s)
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