Articoli rivista
Anno XLI - n.1 - gennaio/marzo 2008 Valutazione scolastica e fenomeni a doppia soglia
The author proposes a ‘double threshold’ explanation of the persistence of teachers’ evaluation of pupils, based on prior experience, as an alternative to the ‘halo effect’ known in psychology, and describes a simple double threshold mechanical device that illustrates the concept and the analogy. […]
Anno XLIX - n.4 - ottobre/dicembre 2016 Variazioni sperimentali su un tema della simulazione dell’esame di Stato
In this article we describe and analyse an experiment on magnetic induction performed using an apparatus inspired by one of the problems proposed in the latest simulation of the final State exam for Physics. The experimental measurements are in good agreement with the mathematical model suggested in the simulation, […]
Anno XLIX - n.3 - luglio/settembre 2016 “Vedere” il calore
The availability of low-cost thermal imaging cameras connected to smartphones opens up interesting opportunities in schools. It is now easy to take infrared images and explore phenomena where heating is involved; it is now possible to “see” heat. This article describes some activities carried out in the classroom with a “smart” […]
Anno XXXIII - n.3 - luglio/settembre 2000 Vedi alla voce quanto
A hundred years ago Max Planck introduced the quantum of action concept; the anniversary is celebrated in many ways all over the world. In the present paper we want to stress that the Planck constant h ‘initially introduced to account for some facts in a field of research which seemed a marginal one’ […]
Anno XXXV - n.2 - aprile/giugno 2002 Velocità del suono in aria
The article describes an easily performable and understandable measurement of the velocity of sound in the air. […]
Anno XXV - n.3 - luglio/settembre 1992 Venti anni di effetto fotoelettrico (1887-1905)
After a concise description of the experimental aspects of the photoelectric effect, this article gives an account of me history of its discovery and of the research that followed, and discusses its contribution to the radical changes in the conceptual framework of physics from the last decade of the past century to Einstein’s work of 1905. […]
Anno XXXV - n.1 - gennaio/marzo 2002 Verifica della legge di Ampère con materiale “povero”
I propose an articulated and complete experimental exploration of Ampère’s law which can be performed with ordinary lab instrumentation. […]