A formula for calculating the index of refraction of a transparent plane parallel sheet is derived geometrically, the known quantities being the thickness of the sheet, the angle of the incident ray of light and the lateral displacement of the outgoing ray. […]
A report on the GIREP ’91 Conference on “Teaching about Reference Frames – from Copernicus to Einstein” […]
A detailed historical analysis of the development of Einstein’s Generai Relativity from 1907, year of his first paper on gravitation, to 1915, the conclusive year of his work, shows that the turning point of the development was the transformation of the classical gravitational theory into a Riemanian theory of space-time. […]
The classical pendulum experiment is discussed in order to show the approximations leading to possibly significant differences between theory and experiment. The way to minimize uncertainties in the data-taking procedure is also discussed. […]
This article analyses notorious problems concerning Newlon’s third law against the historical background. A proposal is made to reformulate this law by substituting the term ‘interaction’ far ‘action’ and ‘reaction’. […]
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. […]
A pendulum whose piane of oscillation can be inclined at will between vertical and horizontal was designed, built and used to measure the effect of varying g on its period of oscillation. […]
We describe, in this paper, a measurement of the density of air, using the equation of state for gases and Archimede’s law. […]
The high school introductory physics course is a particularly delicate moment. One must avoid giving the pupils the impression that physics is mainly related to text-book and school lab and not to real everyday life. This paper describes an experience in which the students were enabled to take a correct attitude towards physics from the start, […]
This article discusses the education of school-teachers in Western Germany alter the sixties, in the context of the school System, and reports the curriculum adopted in 1987 at the University of Kiel for students preparing to become physics teachers. […]