We suggest four paradoxes that can be proposed to high school students as problems, asking them to search for possible solutions. Unlike the usual physics problems and exercises, in a physics paradox the crime is clear but solving it might be, […]
Some simple, low cost and useful apparatuses are described which are easy to be made, even as homework by students. Their usefulness will be found in a number of experiments which normally require expensive and not commonly available instruments in the school laboratory. […]
Introducing another subject in the school curruculum is a delicate affair, especially so if the subject is totally new. This article describes the birth, first implementation and encountered difficulties of ANW (Public Understanding of Science), a new subject intended for all the students of the Dutch general upper secondary schools, […]
2012 is the ‘International Year of Sustainable Energy for all’ but most of the energy we use comes from fossil fuels. We know that increasing the amount of CO2 in the lower atmosphere can trap infrared radiation, increasing its temperature. Climate change has always been a result of natural causes, […]
A simple meteorological station, connected on-line to a personal computer, was used by first-year students of physics at the University of Bologna. It gave the students the opportunity to: (i) work with an example of a technologically up-to-date system for data acquisition, […]
The cheap circuit here described makes possible to process signals in an arbitrary range (e.g. ± 10V) without an external supply, using the positive supply (+5V) available on the U.L.I. interface connector. […]
In this paper the author presents a discussion of the characteristics of a simple water clock built with a tin. Starting from experimental measurements, the emptying of the tin is theoretically described as a simple exercise. The theoretical result is tested on the experimental data and then used as model for the discussion. […]