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Anno XXIII - n.4 - ottobre/dicembre 1990 TERMOGRAFO: un sistema per misure di temperatura on-line nel laboratorio didattico
We describe a temperature data acquisition system for the educational laboratory. Real-time plotting of the outputs of up to 4 sensors allows to easily perform traditional and non-traditional experiments, for example on non-equilibrium states. We suggest a few experiments and discuss the educational uses of the system. […]
Anno XXIII - n.4 - ottobre/dicembre 1990 Prove scritte di Fisica per la Maturità Scientifica Sperimentale: testo e proposte di soluzione (seconda parte)
This article completes a survey of the physics problems assigned since 1979 in the written tests of the final examinations in the experimental secondary schools. We offer the solution of each problem and, occasionally a short comment. […]
Anno XXIII - n.4 - ottobre/dicembre 1990 I problemi di fisica del concorso a cattedre (1984)
Physics examination papers, which were set during the latest (1984) “Concorsi” (i.e. the competitive examinations through which the teachers applying for positions in the Italian State Schools are selected) for teaching “Physics” and “Mathematics and Physics” at secondary school level, are here briefly commented on and a possible solution is sketched for two of the problems. […]
Anno XXIII - n.4 - ottobre/dicembre 1990 La valutazione dell’ingrandimento angolare negli strumenti ottici
This paper analyses an experimental method by which laws of angular magnification, for common optical instruments, are pointed out. Kepler’s and Galilei’s telescopes simple and compound microscopes are analysed with the aid of a TV camera and a monitor. Image sizes are measured on the monitor before and after instrument magnification; […]
Anno XXIII - n.4 - ottobre/dicembre 1990 Fenomeni elettrici e fenomeni magnetici
An experience in teaching the fundamental concepts of the classical electromagnetic in middle-school (12 year old pupils) is reported. Very simple experiments on the magnetic effects induced by the electrical current and vice versa were developed by the pupils whose spontaneous descriptions, […]
Anno XXIII - n.4 - ottobre/dicembre 1990 Moto browniano: esperimento di laboratorio. (Traduzione da Physics Education 23 (1988), a cura di Matilde Cilento)
Measuring the brownian motion of latex microspheres leads to an evaluation of Avogadro’s number. […]
Anno XXIII - n.3 - luglio/settembre 1990 L’astronomia: un’applicazione della fisica
Newtonian gravitational laws explain the motions of planets around the Sun and the motions of double stars around their center of mass. Small deviations from the predictions of these laws have given confirmation of the general relativity theory. Astrophysics, by means of the analysis of the electromagnetic radiation emitted by the celestial bodies permits us to derive the surface temperature of stars, […]
Anno XXIII - n.3 - luglio/settembre 1990 Le proprietà termiche dei materiali. II – Schemi di conoscenza di studenti ed insegnanti
Schemes of common sense knowledge of Italian students and teachers were inferred from the answers to a paper-and-pencil test concerning real-life situations involving thermal phenomena. Concept maps drawn from the test show that the schemes are richer and less detached from the scientific framework than generally supposed. […]
Anno XXIII - n.3 - luglio/settembre 1990 Su un metodo di analisi dei dati di un calorimetro on-line
The results of a low cost on-line experiment on calorimetry are analysed in order to deduce both the thermal capacities of the liquid samples under study and the heat losses of the apparatus. […]
Anno XXIII - n.3 - luglio/settembre 1990 Goethe contro Newton – Una polemica sull’origine rifrazionistica dei colori
In this controversy regarding the theory of colours, Goethe proposes a re-examination of some historical experiments in order to deny Newton’s ideas on the differentiated refraction of the various colours. Goethe analyzes Newton’s statements, step by step in order to criticize them. […]
Anno XXIII - n.3 - luglio/settembre 1990 Prove scritte di fisica per la Maturità Scientifica Sperimentale: testo e proposte di soluzione (prima parte)
The final examination of the Italian experimental scientific high-schools includes a written test in physics in which the students must solve physics problems. The article presents a selection of such problems starting from 1979, offers possible solutions and, in some cases, […]