The article describes an experiment in which the response of polycrystalline silicon solar cells to different wavelengths is explored using unconventional apparatus: the cells were taken from discarded toys and a photographic enlarger was used as monochromator. […]
I describe a simple experiment showing a non trivial phenomenon and the existence of a simple relation between two different quantities. The apparatus can be put togheter with simple materials, and has been used to introduce beginning students to experiments […]
Highschool students studied oscillatory motion using sensors interfaced with graphic calculators. Three kinds of activities were performed: a first activity in the school gym, an extra-curricular laboratory course and a grade 11 lab class. The potentialities of physics investigation starting from the study of phenomena in an informal context are pointed out and the advantages and problems of the use of on line acquisition are discussed. […]
Dealing with a new physical subject one often goes on too hastily in the initial stage, leaving some uncertainties and ambiguities in definitions and in basic features. Furthermore one performs schematizations and simplifications which may be in contradiction with fundamental principles or experimental results. […]