Risultati della ricerca
Anno XLIII - n.2 - aprile/giugno 2010 Magnetismo, effetto relativistico
Following a high-school teaching method we propose the subject-matters used in 1905 by A. Einstein to explain the relativistic effect of a magnetic field. Following the Lorentz-Einstein transforms in time and space, we show that what appears as an electric field in an inertial reference system can be seen in another relativistically equivalent system as a magnetic field. […]
Anno XLIII - n.2 - aprile/giugno 2010 L’analogo rotazionale
With an educational purpose, the analogy between rotational and translational quantities is explained by comparing the behaviours of a flywheel and of a trolley moving along a rail. The inertia of the two compared systems is measured in the same framework. […]
Anno XLIII - n.2 - aprile/giugno 2010 Giochi ed esperimenti con le bottiglie di plastica
Some simple low cost demonstrations using plastic bottles of mineral water are reported. The experiments explore the pressure and weight of gases, Archimede’s law, gases dissolved in water, the Cartesian diver and other phenomena. […]
Anno XLIII - n.2 - aprile/giugno 2010 Si fa presto a dir magnete
Using a magnetic field viewer to show the fields of different kinds of magnets and for measuring the fall of a magnet in a copper tube. […]
Anno XLIII - n.4 - ottobre/dicembre 2010 Il riordino dei Licei e le Indicazioni Nazionali
A short history of the changes brought in secondary education in Italy by increased school autonomy, with special attention to their consequences on the teachers’ role when teaching physics. […]
Anno XLIII - n.4 - ottobre/dicembre 2010 L’insegnamento e l’apprendimento della matematica nei Licei – Indicazioni Nazionali
This paper discusses the new prescriptions for the Mathematics curriculum in the Italian highschools and presents possible learning activities based on research in education and on the UMI-SIS ‘Mathematics for citizenship’ proposals. […]
Anno XLIII - n.4 - ottobre/dicembre 2010 Alcune applicazioni terapeutiche del laser in oftalmologia
After an introduction on the shape and function of the cornea, this paper describes some applications of infrared and ultraviolet lasers in eye surgery for correcting its curvature and for treating some diseases of the retina. […]