Articoli rivista
Anno XXXII - n.1 - gennaio/marzo 1999 Membrane saponose e loro tensione superficiale
Soap bubbles and soap films are interesting and amusing. This article describes an experiment on soap films which can be used at secondary school level that involves forming a film with the shape of a deformed quadrilateral in an area bounded by two rigid straws and two pieces of thread of equal length attached to their ends (Fig. […]
Anno XXXIII - n.2 - aprile/giugno 2000 Meraviglie del cavolo! (ovvero della dimensione frattale del cavolfiore)
The paper deals with the wonderful fractal structure of a kind of cauliflower (Brassica Oleracea Botrytis Cimosa). The fractal dimension of the vegetable is empirically detected by measurement and a simple mathematical model of the fractal cauliflower is then built which agrees with the experimental data. […]
Anno XLVIII - n.2 - aprile/giugno 2015 Metrologia e Correlazioni Quantistiche
Noise is unavoidable in measurements and limits their final precision. In particular, when quantization of carriers is involved, as for photons in electromagnetic fields or electrons in electric currents, a minimal noise is present: the Shot noise. Recently INRiM researchers have experimentally demonstrated how Shot noise can be beaten, […]
Anno XXX - n.3 - luglio/settembre 1997 SFM: Microscopia a scansione di forza
A brief introduction to scanning probe microscopes and electron scanning microscopes is followed by a description of the scanning force microscope operating principle, of its performance and limits; some SFM images of semiconductor samples are shown as examples of the potentialities of this technique. […]
Anno XXVII - n.1 - gennaio/marzo 1994 Migliorare l’insegnamento valutandone l’efficacia
The article is an introduction to Prof. Wilkinson’s paper which is published in this same issue. It discusses the writing of questionnaires to find out how students evaluate their classroom situations, and briefly compares the international and Italian researches in this field. […]
Anno XXXIX - n.1 - gennaio/marzo 2006 Miopia in età scolare e visione da vicino
This work considers the experimental evidence of the eye growth from visual signals. There is presented an eye model in which both the power of the lens and the distance lens-screen can be varied in order to show the accommodation and the elongation that the eye would become because of continual near vision. […]
Anno XLI - n.1 - gennaio/marzo 2008 Misura del momento d’inerzia di un libro
The relationship between the moment of inertia of a body and its period of twisting oscillation was studied in the classroom by suspending a book, in three different orientations according to its symmetry axes, to the edge of a table with a length of tape. […]