The conditions why objects rolling down different inclined tracks cover different distances in equal interval of time are studied. We want to demonstrate that the time taken by a ball to cover a chord of a circumference because of gravity, does not depend on the length of the chord itself. […]
In this paper the author describes Enriques’ ideas on the concept of space and on the relations between geometry and physics. Enriques criticized the views of Kant and Poincare, considered geometry as an empirical science and anticipated some aspects of recent Popper’s epistemology. […]
Bonacini Prize first prize entry. Simple experiments on multiple reflection allowed the pupils of a middle-school class to find the relationship between the number of images and the angle between two upright plane mirrors. The project finished with the construction of a caleidoscope. […]
The use of demonstration experiments during physics lectures is a powerful help for both teacher and students. We suggest that records be preserved with detailed description of materials and methods. A collection of cards, each presenting a single experiment, is being prepared; […]
An experimental activity designed to repeat Millikan’s measurement of the elementary electric charge was performed in a high school. Using a lab instrument, similar in principle to Millikan’s, we look for the quantization property of electric charge we try to estimate its value. […]
Physics and chemistry are compulsory subjects in the last years of the Arts and Crafts studies but many students assign a much greater importance to the more professionally oriented subjects. This article shows how the collaborative teaching of chemistry and physics in the field of electrochemistry can motivate the students and improve their attitude towards science in general. […]