Risultati della ricerca
Anno XL - n.4 - ottobre/dicembre 2007 Perché e come studiare fisica
An open letter to secondary school students in which they are explained why studying physics is worthwhile and are given many suggestions on how to do it effectively. […]
Anno XL - n.4 - ottobre/dicembre 2007 La schiascopia e il suo sviluppo storico
The article illustrates the optical principles of retinoscopy and, using a model of the eye, shows how this diagnostic technique allows sight failures to be measured. The inadequate explanation of retinoscopy and the consequent delay of its practice in XIXth century ophthalmology are discussed. […]
Anno XL - n.4 - ottobre/dicembre 2007 La scienza dei materiali a scuola: un’azione didattica in collaborazione tra scuola e università
The paper describes a didactic unit born of a collaboration between a University Materials Science Laboratory and a secondary school in the frame of a project for vocational guidance and dissemination of scientific culture. The aims, the schedule, the organization into phases, […]
Anno XL - n.4 - ottobre/dicembre 2007 La fisica su una giostra – Alcuni esperimenti significativi
A home-made little carousel is equipped for experiments on motion in a rotating frame. A Foucault’s Pendulum, a ball on a platform, water from a Coriolis fountain, an air puck are launched on the platform and the different perceptions of rotating and stationary observers are analyzed. […]
Anno XL - n.4 - ottobre/dicembre 2007 Galleggianti che si attraggono
We can commonly notice small things – leaves, pieces of paper, etc., – adhering to each other and floating together on the water. The reasons of this behaviour are explained. […]
Anno XL - n.2 - aprile/giugno 2007 Le idee intuitive dei bambini sul campo gravitazionale
The intuitive ideas about the gravitational field of 5 to 9 year-old children were explored in an informal science context with the aim to connect common experience and scientific knowledge through spontaneous thinking. Oral questioning based on a written questionnaire, discussion, […]
Anno XL - n.2 - aprile/giugno 2007 Perché il ghiaccio è scivoloso?
In 1859 Michael Faraday postulated that a thin film of liquid covers the surface of ice – even at temperatures well below freezing. Neglected for nearly a century, the dynamics of ice surfaces has now grown into an active research topic. […]
Anno XL - n.2 - aprile/giugno 2007 Le oscillazioni di un sistema massa-molla, seconda puntata
Two small magnets applied to a simple spring-mass system offer remarkable insight into non-linear oscillation phenomena. We observed amplitude jumps and hysteresis in forced oscillations but not the transition to chaotic motions because the system, after a more or less complicated transitory, […]
Anno XL - n.2 - aprile/giugno 2007 Luna park, supermercati e scienza
In this opinion piece the author examines the science bent activities offered in some amusement parks, in science centers and in a recent DVD on ice skating, and discusses their impact as educational devices for learning physics in schools. […]