Risultati della ricerca
Anno XXVI - n.3 - luglio/settembre 1993 Equilibrio termico: un’esperienza introduttiva a un percorso didattico.
This paper describes an introductory experiment, leading to a definition of temperature based on the use mercury thermometer. The variation in time of the thermometer readings is the starting point for the construction of a mathematical model; this model will be later adapted to more complex systems approaching thermal – […]
Anno XXVI - n.2 - aprile/giugno 1993 Esperimenti di avanguardia con la luce di sincrotrone: dalla spettroscopia alla diffrattometria
This paper describes some applications of the synchrotron radiation emitted by ELETTRA a third-generation dedicated synchrotron built near Trieste. ELETTRA will be a very strong source of well collimated X-rays. Among the uses of such radiation, Super-ESCA spectroscopy will allow very fast chemical analysis of surfaces, […]
Anno XXVI - n.2 - aprile/giugno 1993 La Dinamica Molecolare e l’Insegnamento della Fisica della Materia Condensata nelle Scuole Superiori
In this paper we discuss molecular dynamics, a numerical technique successfully employed since thirty years in research to solve the equations of motion in many body systems. We propose using molecular dynamics as a tool in high school teaching of condensed Matter Physics. […]
Anno XXVI - n.2 - aprile/giugno 1993 Misura dell’accelerazione di gravità con un semplice dispositivo on-line
This paper describes a measurement of the acceleration due to gravity done using a simple device connected to a computer on line. […]
Anno XXVI - n.2 - aprile/giugno 1993 Autosservazione e potenziamento di abilità euristiche
This article underlines the importance of being aware of heuristic abilities to be used in solving problems of Physics, suggests a reasoned inventory of these and proposes two strategies aimed at strengthening specific heuristic abilities. […]
Anno XXVI - n.2 - aprile/giugno 1993 Il valore efficace della corrente alternata
This article describes an experiment to show the reason why alternating currents are rated according to their heating power (for sinusoidal currents, the r.m.s. value). The luminosities of a 6V filament lamp are compared when it is powered by a battery and by a transformer, […]
Anno XXVI - n.2 - aprile/giugno 1993 Un adattatore di tensione fra lo standard americano e quello europeo
A commercial adaptor between the US and European mains standard plugs can be modified to act as a voltage transformer. No heat is produced because a reactive and not a resistive divider is used. The device is a simple example of the Ohm’s law in AC circuits. […]
Anno XXVI - n.2 - aprile/giugno 1993 Campo: concetto, misura, proprietà e conseguenze attraverso esperimenti quantitativi. 2° Premio: Liceo Scientifico M. Buonarroti – Monfalcone.
This paper describes the second prize-winning entry to 1991-1992 “Prernio Bonacini” contest for high-school boys on gravitational field. The 15 year-old students measured the gravitational constant, ascertaining quantitatively the proceeding of the gravitational field. […]
Anno XXVI - n.2 - aprile/giugno 1993 Le Olimpiadi di Fisica in Francia, un concorso per risvegliare l’interesse per la fisica
This article describes the goals, motivations and organization of the French National Physics Olympiads that began in the school year 1991-1992 and reports the Statutes of the competition. […]