Models that can help to understand the mechanisms of some phenomena that occur in liquids, such as evaporation and distillation, and some aspects of the kinetic theory of gases are described […]
The microcomputer brings modelling reality within the reach of most pupils and teachers. This article discusses different kinds of modelling which can be done with the computer, some existing and some being developed. I shall also consider how these kinds of modelling may relate to pupil’s learning and development in Science Education. […]
In a model for demonstrating the function of an eye, a plastic sphere filled with water represents the ocular globe. Inside the sphere, a liquid lens is arranged in the path of a beam of light between a circular window serving as cornea and a semitransparent surface on the opposite side serving as substitute retina. […]
A simple eye model having a structure very similar to a real eye is described. The model allows students to understand geometrical optics in a biological context. […]
The exercise described in this article incorporates several features noteworthy of a physics problem and may serve as a model for creating other exercises. A wooden rod is free to rotate in a vertical plane around its upper end, with its lower end dipping into water. […]
This article reports about some experiments on the physics of resonance and elasticity. Employing a simple setup it is possible to identify the longitudinal eigenmodes of a stretched massive spring and to study their behaviour under the conditions of forced and damped motion. […]
Hooke’s Law applied to a number of springs connected in series (same strength) or in parallel (same elongation) suggests a mechanical analogy to the electrostatic behavior of a number of series or parallel connected capacitors. […]
This article analyses the rigid body motion in presence of friction […]
Measuring the brownian motion of latex microspheres leads to an evaluation of Avogadro’s number. […]