Risultati della ricerca
Anno XXVI - n.1 - gennaio/marzo 1993 Geometria dello spazio-tempo e paradossi relativistici
The classical skier paradox is revisited, with the aim of showing that a strictly geometric approach (i.e. one that makes no use of Lorentz transformations and the like) is more apt at revealing the true nature of the physical problem being studied. […]
Anno XXVI - n.1 - gennaio/marzo 1993 Esperimenti didattici su proprietà della materia.
Some non conventional experiments on thermometry and water density carried out in lower secondary school are described. A novel development of basic research on free convection in water was suggested by the analysis and discussion with children of the features of a “wrong thermometer”. […]
Anno XXVI - n.1 - gennaio/marzo 1993 Il pendolo di Foucault come ausilio didattico (Traduzione da Physics Education, vol. 26, n. 2, Marzo 1991, a cura di Salvatore D’Agostino)
The Foucault pendulum can be an excellent teaching aid. For example, it can be used to measure the latitude of the place you live in. This article shows how the students and the entire population of a small village were involved in a physics experiment and discusses some modifications to the original design for an updated repetition of the experiment. […]
Anno XXVI - n.1 - gennaio/marzo 1993 Acquisizione di dati dalla porta parallela del PC e misure di tempi
This article explains how to acquire digital data from the parallel port of an IBM-compatible PC. Several experiments in the field of Mechanics, involving time measurements, may be done this way by simply connecting suitable switches (mechanical or optical) to the control lines of the port. […]
Anno XXVI - n.1 - gennaio/marzo 1993 Polarizzazione della luce e legge di Malus
This article describes an experiment on Malus’ Law for polarized light, using a LED as light source, two polaroid sheets as polarizers and a phototransistor as receiver. […]
Anno XXVI - n.1 - gennaio/marzo 1993 Come misurare l’altezza di un satellite… guardando la televisione
This article deals with a rather simple method for measuring the height of telecommunication geostationary satellites. By observing the same telecast on two side by side displays, one of which is receiving the satellite image while the other is receiving from ground relay, […]
Anno XXVI - n.1 - gennaio/marzo 1993 Interfaccia per misure on-line nel laboratorio di fisica con computer Apple
We describe hardware and software of a low-cost interface board designed to allow easy measurement of analog quantities and time intervals by Apple IIe computer in the physics laboratory. The device includes a timer, a four channel A/D converter and the corresponding conditioning circuits for data acquisition. […]
Anno XXVI - n.1 - gennaio/marzo 1993 Il “caso” e gli eventi sistematici
A random error analysis casually led to the identification of a systematic error. This suggests a new use for inaccurate chronometers. […]
Anno XXVI - n.1 - gennaio/marzo 1993 I problemi di fisica nella rivista “Kvant” (traduzione a cura di Silvia Pugliese Jona)
This article describes the contents structure of the journal KVANT and compares it with its American counterpart QUANTUM. […]