Risultati della ricerca
Anno XLIV - n.1 - gennaio/marzo 2011 Cogliere la realtà in movimento: il software Tracker
Tracker is a free software that allows to study the trajectory of any moving object by analysing a video. Using this software to study the parabolic motion of balls in sports such as table tennis and basketball the pupils can learn how to enhance their performance as players while enjoying physics. […]
Anno XLIV - n.1 - gennaio/marzo 2011 DVD in caduta
The fall of a vertical DVD upon a horizontal desk is studied. Different initial conditions are analysed with respect to the static and dynamic friction coefficients and the starting angle. Differential equations of motion are derived and numerical solutions are compared with measurements taken in simple experiments. […]
Anno XLIII - n.3 - luglio/settembre 2010 l ritmo musicale nell’esperimento del piano inclinato di Galileo
Adding a musical background to Galileo’s experiment in which a ball rolls along an inclined plane shows how Galileo might have obtained accurate results with the aid of his musical ear. In this historical context the students organize their measurements with unusual (but modernised) procedures. […]
Anno XLIII - n.3 - luglio/settembre 2010 Un esperimento per sfida: X Scotch
Triboluminescence was studied using a self-built 8-litre vacuum chamber operated at a pressure of about 1mtorr. Luminescence is observed in the chamber along the peeling line of an unrolled adhesive tape. The tribo-mechanism produced electrons and X-rays are revealed by the intense luminescence of a BGO crystal positioned close to the peeling line. […]
Anno XLIII - n.3 - luglio/settembre 2010 Analisi di un sistema di conversione dell’energia
In the context of the ‘Lauree Scientifiche – Scienza dei materiali’ project, highschool students analyze the energy transfers in a kit including a solar cell, two PEM cells (electrolyzer and fuel cell) and a fan, with special attention to the hydrogen stocking process in the reservoir. […]
Anno XLIII - n.3 - luglio/settembre 2010 La conservazione dell’energia nel tiro con l’arco
The article describes a simple but effective experiment on energy conservation. The experiment was performed in the school physics lab using the Tracker program and an archers’ bow. […]