Articoli rivista
Anno XXXII - n.3 - luglio/settembre 1999 Quando la termodinamica incontra la meccanica: bilanci energetici di oggetti in movimento
In the study of subjects at the borderline between Thermodynamics and Mechanics, typical aspects of one of the two sciences are sometimes overlooked and incomplete, contradictory or partially erroneous descriptions are given. We find this type of difficulty in situations where there are objects in motion and, […]
Anno XLI - n.1 - gennaio/marzo 2008 Quando la visione binoculare è un intralcio…
Looking through a pitcher full of water reveals a surprising optical effect. […]
Anno LIV – n.2 – aprile/giugno 2021 Quando scocca la scintilla
Among the first electrostatic machines, the one developed by Edward Nairne, a skilled English instrument maker of the second half of the eighteenth century, should be mentioned. This electrostatic generator is little known, however it was used in medical field for over a century. […]
Anno XLV - n.1 - gennaio/marzo 2012 Quanta energia è irradiata scaricando un condensatore?
Reasoning on what happens when connecting two charged capacitors suggests a general procedure for evaluating the energy associated with the propagation of electromagnetic waves. […]
Anno XXVIII - n.2 - aprile/giugno 1995 Quanti sono gli elettroni di conduzione nei metalli?
We test experimentally the free electron gas model for electric conduction in metals by means of measurements of the Hall coefficient. Full details for the construction of the experimental apparatus are given. […]
Anno XXXI - n.4 - ottobre/dicembre 1998 Quantizzazione della conduttanza in contatti d’oro unidimensionali
Using a very easy experiment, conductivity quantization can be observed. In this way quantum mechanics becomes something students can also experiment. […]
Anno XXIV - n.4 - ottobre/dicembre 1991 Quattro masse e una bilancia
The article presents the solution of an old problem about a pair of scales, known to be inaccurate, and four unknown masses. […]
Anno XLV - n.2 - aprile/giugno 2012 Quei testi dell’Apocalisse. Legge dell’apprendimento iperbolico
In recent years the knowledge levels in science of freshmen dropped constantly in Italy and in other countries. This might be because the excess of information in today?s secondary school textbooks makes identifying and mastering the important concepts difficult. Results found by different groups that examined pre-university textbooks in a number of different countries are reported. […]