Articoli rivista
Anno XXV - n.3 - luglio/settembre 1992 Una soluzione geometrica di un problema di ottica
A formula for calculating the index of refraction of a transparent plane parallel sheet is derived geometrically, the known quantities being the thickness of the sheet, the angle of the incident ray of light and the lateral displacement of the outgoing ray. […]
Anno XL - n.3 - luglio/settembre 2007
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Una spazzola che cammina
We introduce a simple homemade toy, which can glide forward with no propellers, limbs, wheels, and seemingly no movement of any kind that can push forward against the ground. The toy arouses the pupils’ interest and their incentive to ask ‘Why’? […]