Articoli rivista
Anno XXIV - n.3 - luglio/settembre 1991 La pressione della luce
The idea that light produces pressure evolved through a series of adoptions and rejections, from the hypothesis of Newton to the experiment of Lebedev, depending on the theory used to describe the nature of light. This article reviews the history of this development. […]
Anno XXIV - n.4 - ottobre/dicembre 1991 La propagazione rettilinea della luce: una unità didattica per la scuola media
This is a detailed report of the study of the basic properties of light propagation with a middle-school class of 12 year pupils. It required about 20 hours of classroom time. The pupils performed experiments on the linear propagation of light and on the reflection on plane and concave mirrors using simple apparatus. […]
Anno XXXIX - n.2 - aprile/giugno 2006 La proposta di riforma Boselli e l’insegnamento della fisica
A law involving science curricula, proposed about one century ago, is analysed and its modern and still valid interpretation of science teaching and of the relationship between school education and the productive world is highlighted. […]
Anno XXIX - n.2 - aprile/giugno 1996 La radio a cristallo
After describing the working principles of the crystal radio, the author puts them into practice designing, assembling and testing a simple radio system. Didactic suggestions are given. […]
Anno XLV - n.3 - luglio/settembre 2012 La radio a cristallo: un progetto e una ricerca
The so called crystal radio is a simple receiver that can generate strong interest and emotions. Starting with the improvised ‘Blue Gillette blade’ detector used in the mythical ‘foxhole radios’ by the American soldiers during WWII, we explore some new and unusual detectors that can be assembled ‘in the kitchen’. […]
Anno XXV - n.2 - aprile/giugno 1992 La Relatività Generale di Einstein nel suo sviluppo storico
A detailed historical analysis of the development of Einstein’s Generai Relativity from 1907, year of his first paper on gravitation, to 1915, the conclusive year of his work, shows that the turning point of the development was the transformation of the classical gravitational theory into a Riemanian theory of space-time. […]
Anno XXXVIII - n.4 - ottobre/dicembre 2005 La relatività generale: mezzo secolo di successi dopo una lunga fase di stanca
After a first period of successful observations, e.g. Eddington’s 1919 observation of the deviation of light in the gravitational field of the Sun, the interest in general relativity (GR) was low for many years. The foreseen effects were too small to be measured with available instruments. […]