Articoli rivista
Anno XLVII - n.1 - gennaio/marzo 2014 Sulla scarica di un condensatore ovvero sulla difficoltà di fare modelli giusti
When is radiation important in the discharge of a capacitor? When is it negligible? The answer depends on many geometrical and physical parameters. Reasonable estimates and suitable approximations/schematizations find that the radiated energy is negligible compared to the Joule dissipation unless a small capacitance is used and the circuit is a loop comparable in size to the capacitor. […]
Anno XLIV - n.3 - luglio/settembre 2011 Suono a scuola e suono a casa
We suggest a simple experimental method to let the students understand the Physics of the sound. The method can be carried out at school, but also as homework, provided that students have a PC and some other easily available items such as tuning forks, […]
Anno XXIV - n.1 - gennaio/marzo 1991 Superconduttività ad alta temperatura
A short phenomenological description of the behaviour of the classic low-temperature superconductors is given. A brief history of the progresses achieved during the past half century in the search of “high temperature superconductors” introduces to the recent discovery of the new ceramic superconductors. […]
Anno XLV - n.4 - ottobre/dicembre 2012 Sviluppi scientifici e tecnologici della superconduttività ad un secolo dalla scoperta
Superconductivity was discovered one hundred years ago. After a short history of its discovery we discuss the basics of the underlying physics, how it can be explained in school, examples of how it is now used and what might be the future possibilities. […]
Anno XXXIII - n.3 - luglio/settembre 2000 Sviluppo del concetto di modello in alunni di 15-16 anni
In the eighties the author developed an introductory science course for 15 year old students at the beginning of secondary school in Holland. The aim of the course was to show how scientific knowledge, leading to laws and theorization through models, […]
Anno XXVI - n.4 - ottobre/dicembre 1993 Svuotamento di un serbatoio d’acqua attraverso un tubo capillare
The article describes a simple experiment to illustrate the exponential decay of a water column. The liquid flows through a capillary tube obtained by removing the wire from a thin electric cable. […]