Risultati della ricerca
Anno XLVIII - n.1 - gennaio/marzo 2015 I crateri formati dalle meteoriti
A brief analysis of meteorites and their effects on earth is given. In particular, the paper focuses on the relationship between the energy of a meteorite fallen on the earth and the width of the crater. The reader will find a very simple experiment that simulates the fall of a meteorite and allows to measure energy and the diameter of the crater. […]
Anno XLVII - n.4 - ottobre/dicembre 2014 Anche i fisici hanno umane debolezze
Last Spring’s sensational news, then proved to be rash, about the discovery of gravitational waves originated after the Big Bang, illustrate some unfair aspects of the methods used by the scientists in divulgating the results of their researches […]
Anno XLVII - n.4 - ottobre/dicembre 2014 “Io dico l’universo” (Parlare a scuola dell’evoluzione stellare)
The following contribution to the last AIF’s Congress outlines a concise didactic excursus on stellar evolution suitable for secondary school students. The proposal, following Galileo’s suggestion about the “book of the Universe”, invites to get the relevance of the study about the origins and of an evolutive process resulting in our very existence. […]
Anno XLVII - n.4 - ottobre/dicembre 2014 Teorie fisiche: forma e sostanza. Un esempio
Beginning of the 19th century, aether and relativity: Lorentz was looking for space-time transformation rules fitting with the covariance of Maxwell?s equations under the change from aether to Earths reference frame. Meanwhile, Einstein was stating the identity of the laws of physics in any inertial frame and the rules of invariance of the speed of light in vacuum, […]
Anno XLVII - n.4 - ottobre/dicembre 2014 La statistica con la macchina di Galton
This work proposes an example of experimental approach for the treatment of statistic matters for last classes of the secondary school. Through the construction of Galton’s machine, the validity of the central limit theorem has been shown and as the distribution of the random experimental data is described to the best by the Gauss’curve. […]
Anno XLVII - n.3 - luglio/settembre 2014 Misura della velocità della luce con mezzi modici
A simple way of measuring the speed of light in an educational context using one or a couple of mirrors and some easily available common electronic equipment is described. […]