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Vegetable oil stirling engine

Building a vegetable oil stirling engine helps to demonstrate different scientific properties: Expansion and condensation of the air under the influence heat Principle of operation of a piston Conversion of thermal energy into motion Use of a bio-fuel This DIYs shows a simple prototype of ... »
stirling, condensation, piston, prototype, steam
Note
Difficulté
Durée3h 0 min.
Date06.05.2013
Langue(s)

Pet-Star water rocket car

The Pet Star water rocket car is an environmental friendly vehicle.   A Pet bottle is used to stock air and water. The air is pressurised with a bicycle pump . The water is expelled because of this great pressure and pushes the car forward (action<>reaction principle).   This DIYs project helps to ... »
rocket, pressurised, bicycle, pump, pushes
Note
Difficulté
Durée10h 0 min.
Date06.05.2013
Langue(s)

Magnetic alarm

Why not build a magnetic alarm to protect your room or your drawers from any intrusion !   This DIYs project is an electronic device which detects the proximity of a magnet. If the magnet is moved away, the alarm will ring. ... »
intrusion, detects, proximity, magnet
Note
Difficulté
Durée2h 0 min.
Date03.05.2013
Langue(s)

Pantograph

This pantograph can copy a drawing about 1.5 times larger than the original size.   Easy to make, it's a nice DIYs project to introduce the concept of scale and some notions of geometry. ... »
pantograph, geometry
Note
Difficulté
Durée2h 0 min.
Date03.05.2013
Langue(s)

Anti-monster flash light & buzzer

Building this very special Anti-monster flash light & buzzer is a nice way to experiment an electrical circuit a bit more complex than the usual battery/bulb/switch one.   Beware that once completed, this is a very noisy device...   This DIYs project uses a very energy efficient ... »
flash, experiment, bulb, noisy, emitting
Note
Difficulté
Durée2h 0 min.
Date03.05.2013
Langue(s)
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