This article presents the physics problems set for the written tests of the final examinations in the experimental secondary schools in 1991. We offer a possible solution and a short comment. […]
Two problems are discussed, giving a schematic solution and an evaluation […]
Among the forces affecting the equilibrium of an object submerged in a fluid, the present work will focus on the impact of the object on the fluid rather than on the buoyancy of the fluid itself. If the former is measured by means of one-pan balance, […]
The phenomena of deterministic chaos and fractal geometry are described in a simple and “naive” form, with the main purpose of stressing the great significance of theory in the context of deterministic chaos and pointing out the role of the mathematical tool in determining a framework capable of describing and explaining many natural phenomena. […]
A random error analysis casually led to the identification of a systematic error. This suggests a new use for inaccurate chronometers. […]
In physics teaching there is a widespread idea that to understand colour nothing is needed but the knowledge of the spectral distribution of the radiation reaching eyes. That is not the case. Colour perception is a complex game played by four players: a light source, […]
The aim of this article is to contribute to the study of the problems related to the on-line use of the computer in the Physics Laboratory. Differences between traditional lab-activities and on-line computer based lab-activities will be illustrated by describing the use of a Data Acquisition System (DAS) for the analog quantities and time intervals. […]