Articoli rivista

ultimo numero della rivista Anno XXXIII - n.3 - luglio/settembre 2000

Jordan, Pauli, politica, Brecht e una costante gravitazionale variabile

Pascual Jordan was one of the great theoretical physicists of the century. But his attempt to modify general relativity with a variable gravitational constant did nothing to enhance his reputation. Nor did his conspicuous membership in the Nazi Party. […]

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ultimo numero della rivista Anno XLVI - n.3 - luglio/settembre 2013
Cultura

Joseph Louis Lagrange a duecento anni dalla morte

The Piedmontese mathematician Joseph Louis Lagrange died in Paris 200 years ago. His interesting life and his scientific achievements are recalled and described […]

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ultimo numero della rivista Anno XXXII - n.1 - gennaio/marzo 1999
Didattica

Joule e l’equivalente meccanico del calore: tra storia della fisica e didattica

After the introduction of Joule’s work, his paddle wheel experiment is analysed. The conceptual simplicity of this experimental apparatus makes itself a useful didactic model. Therefore its reproduction, the execution of the experiment and the possible didactic purposes will be described. […]

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ultimo numero della rivista Anno XXXIV - n.4 - ottobre/dicembre 2001
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L’affare girasole o “all’inseguimento del Sole”

The students of the last class of a French scientific lyceum built an electronic device that can follow the sun like a sunflower. The circuit can be used to orient solar panels in an energy-saving project. This school project has a multidisciplinary nature: for example it can be associated with the study of nervous signals in biology and can introduce the topic of artificial intelligence. […]

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ultimo numero della rivista Anno XXVIII - n.1 - gennaio/marzo 1995
Didattica

L’analogia idrodinamica e lo sviluppo della teoria elettromagnetica di Maxwell

In 1855 Maxwell developed a formal analogy between the motion of an incompressible fluid, the electric current in a conductor, and the lines of force of a magnetic field. His analysis represents an example of interdisciplinary study of physical phenomena in the past, […]

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ultimo numero della rivista Anno XLIII - n.2 - aprile/giugno 2010
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Note di laboratorio

L’analogo rotazionale

With an educational purpose, the analogy between rotational and translational quantities is explained by comparing the behaviours of a flywheel and of a trolley moving along a rail. The inertia of the two compared systems is measured in the same framework. […]

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ultimo numero della rivista Anno XLVI - n.1 - gennaio/marzo 2013

L’anello saltatore e nuove storie

The Thomson ring experiment is revisited obtaining higher and higher jumps. The ring’s inductance and the phase lag between the primary magnetic flux and the current are determined using a new procedure. New configurations that produce an electromagnetic cannon that fires aluminium disks are presented. […]

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