Risultati della ricerca
Anno XXVIII - n.3 - luglio/settembre 1995 Gli anelli di Newton – allora e oggi
Working in the open air Newton measured the rings and from these measurements he calculated the “fit length” of light. The author repeated Newton’s measurements. Then when he went indoors using fluorescent light he was greatly surprised at what he saw. […]
Anno XXVIII - n.2 - aprile/giugno 1995 Giorno solare vero e giorno solare medio: misura del tempo con una meridiana
Because of the change of Earth’s revolution velocity, true solar time shows small periodic fluctuations compared with mean solar time, measurable with watches. Studying the Earth’s motion we can calculate this time difference (known as the equation of time) and moreover we can understand how sun-dials marking true solar time work. […]
Anno XXVIII - n.2 - aprile/giugno 1995 L’elettromagnetismo con l’on-line
This article describes two quantitative experiments about electromagnetic phenomena performed with an appropriate interface board connected to a computer on-line […]
Anno XXVIII - n.2 - aprile/giugno 1995 Riflessioni sull’insegnamento della fisica ad allievi non udenti nella scuola superiore
Peculiarities and problems of deaf high school students are outlined, related to the obstacles they meet in learning Physics, namely the difficulty in abstracting, generalizing, and using rules with flexibility. In particular, the typical misunderstandings due to deaf natural language are pointed out, […]
Anno XXVIII - n.2 - aprile/giugno 1995 Uso di simulazioni per studiare il moto browniano
After a brief historical introduction to Brownian motion, attention is given to the importance of this kind of motion when teaching about atomic structure of matter. Direct demonstrations in the school are difficult to show in a satisfactory and meaningful way, […]
Anno XXVIII - n.2 - aprile/giugno 1995 Quanti sono gli elettroni di conduzione nei metalli?
We test experimentally the free electron gas model for electric conduction in metals by means of measurements of the Hall coefficient. Full details for the construction of the experimental apparatus are given. […]
Anno XXVIII - n.2 - aprile/giugno 1995 Un esperimento per determinare l’andamento del rapporto Q/V per un conduttore qualsiasi
This article describes a simple method to experiment the relation Q/V=const, by means of the direct measurement of Q and V. The necessary equipment can be easily found in any physics laboratory, as it is basically made of a 0-600V dc generator, […]
Anno XXVIII - n.2 - aprile/giugno 1995 Misure di resistenza elettrica ottenute da misure di tempo con un calcolatore collegato on-line
A simple interface, performing measurements of electrical resistance by evaluating the length of a pulse with computer on-line is described. The circuit is particularly simple so that it can be discussed even with pupils of the second year of secondary school, […]
Anno XXVIII - n.2 - aprile/giugno 1995 SciLink: esperimento internazionale
A report on SciLink, as international exchange project involving high school students and their science teachers in American and Russian schools, as an example of using Internet in science education. […]