Articoli rivista
Anno XXXI - n.2 - aprile/giugno 1998 Come valorizzare un antico esperimento didattico con la tecnica MBL: la macchina di Atwood per condurre una ricerca sperimentale sul moto
Atwood’s machine is a device born in the XVIII century as an aid for teaching mechanics; a reduced and simplified version of such device still appears in physics textbooks, as an application of Newton’s second law. An Atwood’s machine interfaced to a PC by means of position and force sensors becomes a device for a detailed investigation on the motion of bodies subject to forces that change with position. […]
Anno XXXI - n.2 - aprile/giugno 1998 Comportamenti casuali di un sistema deterministico
After some brief remarks about determinism and randomness, a simulation program is illustrated which points out how chance and necessity do coexist in classical physics. Actually, a gas of N = 1000 interacting disks in a box neatly head for the Maxwell-Boltzmann distribution just in some ten collisions. […]
Anno XXXII - n.1 - gennaio/marzo 1999 Comunicazioni in rete telematica e costruzione collaborativa di concetti scientifici: le precipitazioni atmosferiche
In this paper we present some of the results of a research project, carried on since 1990, to evaluate the potentiality offered by the new information and communication technologies, to the innovation of science teaching (physics in particular) in school. Eight Italian middle school classes, […]
Anno XXVI - n.3 - luglio/settembre 1993 Concetti, esperimenti e pregiudizi: la lunga via verso la legge di Ohm. (Traduzione da Naturwissenschaften im Unterricht PHYSIK/CHEMIE n. 50, dicembre 1989, a cura di A.M. Fichera)
From 1775 to 1826 Ohm’s Law was gradually approached through the investigations of many researchers, stating with Cavendish. This article discusses the main experiments and the evolution of the underlying ideas, among which the concept of internal resistance of electrical generators eventually proved itself essential to Ohm’s discovery. […]