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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)français deutsch english

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)français deutsch english
Triée par:NoteDifficultéDuréeDate

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