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Résultats de la recherche

Trammel of Archimedes - ellipsograph

The trammel of Archimedes is a very amusing and ingenious device which can easily draw an ellipse.   The movement of this device is extremely interesting to observe: two short bars perform some back and forth movements in two perpendicular guides. They are both connected to the same bar which moves ... »
archimedes, ingenious, ellipse, observe, perpendicular
Note
Difficulté
Durée2h 0 min.
Date03.05.2013
Langue(s)

Electroquiz

Building an electroquiz is a good way to experiment simple electrical connections.   This DIYs project is not only technical, the question & answer part can exercise different skills (writing, spelling, drawing, general knowledge, calculation,...). ... »
experiment, calculation
Note
Difficulté
Durée2h 0 min.
Date03.05.2013
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)

Water rocket

This water rocket DIYs project shows how you can stock energy and illustrates the action-reaction principle.   With the help of a bicycle pump, air is compressed in a tank (bottle) containing some water. By releasing the air, the water is expelled and the rocket is launched high in the air. To ... »
rocket, illustrates, bicycle, pump, compressed
Note
Difficulté
Durée3h 0 min.
Date03.05.2013
Langue(s)

Ecrire à l'envers

Léonard de Vinci avait pris l'habitude d'écrire 'à l'envers' soit de droite à gauche et 'en miroir'.   On suppose que cela lui évitait de passer sa main sur l'encre encore fraîche car il était gaucher. Il savait aussi écrire de gauche à droite comme nous et signait son nom de cette façon.   Cette ... »
appelée, nécessite, entrainement, génie, méthodes
Note
Difficulté
Durée20h 0 min.
Date11.09.2019
Langue(s)
français
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