Articoli rivista
Note di laboratorio
Anno XLVIII - n.4 - ottobre/dicembre 2015 Il laboratorio Elettricità-Luce al liceo “Quadri” di Vicenza
This article describes a laboratory activity undertaken by a group of students in the final year of a scientific high school. The main goals were to clarify the relationship between the microscopic models and macroscopic aspects of electrical properties of matter and to examine the effectiveness of teaching based on guided inquiry. […]
Anno XXVII - n.2 - aprile/giugno 1994 Il Mistero del forellino negativo. (traduzione da The Physics Teacher, novembre 1991, a cura di Silvano Sgrignoli)
“Negative pinholes” – black spots which are an optical reverse-counterpart for small holes – are a nice idea indeed and a good benchmark for the effectiveness of ray-tracing techniques. The article shows how an intriguing paradox raised by negative-pin-hole images can be turned into an interesting classroom activity. […]
Anno XXIV - n.1 - gennaio/marzo 1991 Il moto dei corpi in un fluido viscoso: un’esperienza per valutare la resistenza del mezzo
This work describes an experiment, carried out with rather simple devices, on the quantitative study of the motion of some spheres, made of different materials, freely falling in water. We also propose a simulation program, written in Pascal language, allowing to compare the results of a theoretical model with the experimental data. […]
Anno L - n.4 - ottobre/dicembre 2017 Il pendolo fisico: teoria, simulazione, esperimento
We propose a new tool for laboratory curricula based on computer-aided data acquisition and analysis. A pendulum coupled to a low-friction rotary sensor offers variable length, variable mass, and two different kind of damping torque: “dynamic friction” (almost constant) and “viscous” friction proportional to the angular velocity. […]
Anno XLIX - n.3 - luglio/settembre 2016 Il pendolo semplice
You can measure both the period and the amplitude of a simple pendulum “on the fly”, i.e. while it is swinging and slowing down. This was implemented years ago using a photogate connected to the serial port of a personal computer (which made the time measurements). […]
Anno XXVI - n.2 - aprile/giugno 1993 Il valore efficace della corrente alternata
This article describes an experiment to show the reason why alternating currents are rated according to their heating power (for sinusoidal currents, the r.m.s. value). The luminosities of a 6V filament lamp are compared when it is powered by a battery and by a transformer, […]
Anno XLIV - n.3 - luglio/settembre 2011 Immagini dall’invisibile
The students are guided to take infrared photos with a modified computer webcam, and to understand why on the monitor figures can be shown, which are invisible for the eye. […]
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 XLVI - n.1 - gennaio/marzo 2013 L’anello saltatore e nuove storie
The Thomson ring experiment is revisited obtaining higher and higher jumps. The ring’s inductance and the phase lag between the primary magnetic flux and the current are determined using a new procedure. New configurations that produce an electromagnetic cannon that fires aluminium disks are presented. […]