This week , our students of third of ESO have to discover how a homemade projector works.

The experiment is about to make a projector by using a bulb with water as a lens and a cellular


We found this experiment on the Internet but, the main aim is to explain it by using the optic

laws we learnt in class.

What kid of lens do we have? Why if we move the mobile the image on the screen gets bigger

or smaller?...

Here you have some pictures of the making process











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La Festa de la Pau


fons pantalla 01

escola vespertina 01

premi sambori