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Anno XXIV - n.3 - luglio/settembre 1991 Un codice per facilitare la stesura dei resoconti scientifici. (Traduzione da Education in Science n. 128, giugno 1988, a cura di Silvia Pugliese Jona)
The article describes a code for facilitating the writing of science reports by primary schoolchildren and gives a few examples of using it in the classroom. […]
Anno XXIV - n.3 - luglio/settembre 1991 Le trasformazioni energetiche (Scuola media statale “S. Taricco”, Cherasco CN)
This article describes an entry to the Bonacini Annual Contest lor experimental work in the school. The theme of the Contest was “Energy Transformations”. In their practical work, the 12-year old pupils built simple appliances in which different kinds of energy transfers took piace. […]
Anno XXIV - n.2 - aprile/giugno 1991 Piccoli e grandi numeri in fisica
Numbers are often viewed as a matter for end-of-chapter problems. Actually numerical estimates of physical quantities are of utmost importance: significant examples of them should always accompany the discussion of physical laws. When is the measure of a physical quantity merely conventional, […]
Anno XXIV - n.2 - aprile/giugno 1991 Deviazione dei gravi verso oriente
The deviation to the east of a falling body is examined in the hypothesis that the body is dropped at the equator and the distance fallen is small so that the variation of gravity with height and air resistance may be neglected. […]
Anno XXIV - n.2 - aprile/giugno 1991 Divertimenti elettrici nel Settecento
The actors on the stage of science after Newton’s age could be divided into two groups: the so called “geometers” involved in improving mechanics and gravitation from a mathematical point of view, and the “physicists” more interested in investigating subjects like magnetism, […]
Anno XXIV - n.2 - aprile/giugno 1991 Studio della conduzione del calore con l’utilizzo del computer on-line
This article presents a simple experiment on the conduction of heat in a metallic bar. Temperatures vs time are measured on-line and plotted in real time with a PC. We discuss me data, then we evaluate heat losses along the sides of the bar and we calculate the heat transmission coefficient using a finite difference algorithm. […]
Anno XXIV - n.2 - aprile/giugno 1991 Ancora a proposito di un problema (elementare?) di termodinamica
In this note we present some remarks on the prediction of the equilibrium state in a horizontal, rigid, adiabatic cylinder divided into two chambers by an adiabatic piston. The two chambers contain two gases 1 and 2, at different pressures and temperatures. […]
Anno XXIV - n.2 - aprile/giugno 1991 Gas perfetti e gas reali. 1° Premio: Liceo Scientifico Statale “A. Tassorlin, Modena
We begin to study the properties of gases through a well-known mechanical model, then we perform a school-Iab replica of Volta’s experiment on the dilatation of gases at constant pressure. After observing that the behaviour of air is close to that of ideal gases, […]
Anno XXIV - n.2 - aprile/giugno 1991 Strategie di problem solving in fisica
The author, teacher of physics at I.T.I.S. “A. Volta” (high school) of Naples, scholar of Cognitive Science, has applied the strategies of problem solving to physics. This approach gives the students the opportunity to work in an organized and productive way. […]
Anno XXIV - n.2 - aprile/giugno 1991 Quali metodi numerici per l’acquisizione dei dati? (Traduzione a cura di S. Pugliese Jona)
Problems related to numerical resolution in on-line data acquisition are discussed and different smoothing techniques for data analysis are proposed. […]
Anno XXIV - n.2 - aprile/giugno 1991 Gas perfetti e gas reali. 2° Premio: Liceo Classico “Virgilio”, Empoli FI
A few experiments on the behaviour of real gases were performed. They show that the behaviour of air at constant temperature is quite similar to that of an ideai gas but, at constant pressure and varying temperature, the different behaviours of various gases (air, […]