Articoli rivista
Anno XXXI - n.3 - luglio/settembre 1998 Misura della costante h/e (costante di Planck/carica elementare) mediante diodi L.E.D.
By means of some LEDs (Light Emitting Diodes) used as quasi-monochromatic light sources at different wavelengths and measuring their forward voltage at a fixed value of the current one can obtain the ratio of Planck’s constant to elementary charge with an estimated error of the order of 6%. […]
Anno XXVIII - n.3 - luglio/settembre 1995 Misura della lunghezza d’onda della luce con un disco microsolco
This article describes how it is possible to measure the light wavelength using a phonograph microgroove disc. […]
Anno XLVII - n.3 - luglio/settembre 2014 Misura della velocità della luce con mezzi modici
A simple way of measuring the speed of light in an educational context using one or a couple of mirrors and some easily available common electronic equipment is described. […]
Anno LVI - n.4 - ottobre/dicembre 2023 Misura di raggi cosmici con il progetto MoCRiS2
In this study, we introduce an experimental teaching approach aimed at exploring how the cosmic radiation flux varies with balloon altitude. We use two distinct types of ionizing radiation detectors for this investigation. Our initiative, inspired by the pioneering measurements of Victor Hesse, […]
Anno XXXVI - n.3 - luglio/settembre 2003 Misurare la velocità tramite l’effetto Doppler
Velocities are measured through the interference of waves of slightly different frequencies due to the Doppler effect. The experiment is performed with mechanical (ultrasound) and electromagnetic (laser light) waves. The ultrasound results are compared with velocities measured in an independent way. […]
Anno XLVIII - n.3 - luglio/settembre 2015 Misurare pi-greco
This article describes an activity aimed at measuring the value of pi. Five methods, were used, all of them easy to perform. All results agree with the known value within 1%. The activity is suitable to introduce the concept of measurement uncertainty at the beginning of Physics Classes. […]
Anno XXIII - n.2 (speciale: L'elaboratore nella didattica della fisica) - aprile/giugno 1990 Misurazione di grandezze cinematiche con un personal computer on-line
An automatic device for studying motions is described in this paper. The device consists of a dynamics cart carrying a phototransistor that receives the light reflected by a sheet of paper whit black and white stripes, on which the cart perpendicularly moves. […]
Anno LIV – n.4 – ottobre/dicembre 2021 Misure del coefficiente di temperatura di resistenza con Arduino
A Wheatstone bridge with digital readout system is discussed and used to measure the temperature coefficient of various types of resistors. The system could also be considered as a linear responsivity thermometer. […]