Articoli rivista
Cultura
Anno XXVII - n.4 - ottobre/dicembre 1994 Legge e caso alle origini della fisica contemporanea
The European culture at the turn of the century developed a deep criticism of the concept of “natural laws”. In the meantime, the new concept of “statistical law” was found to be useful and fruitful. The paper proposes a review of the positions on this issue of the physicists and philosophers like Boltzmann, […]
Anno XXIII - n.1 - gennaio/marzo 1990 Meccanica quantistica ed evoluzione nei rapporti tra Fisica e Matematica all’inizio del XX secolo
The paper deals with a sort of discrepancy between the historical development of Quantum Mechanics and the way it is generally taught. Quantum Mechanics is usually presented after its fundamental postulates, while this is not easy to connect to the real historical evolution of the basic ideas. […]
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 XVIII - n.2 - aprile/giugno 1985 Niels Bohr (1885-1962): una breve biografia (traduzione di A. Loria)
Attenzione: il nome dell’autore è Kennedy, non Kennedi […]
Anno XXIV - n.2 - aprile/giugno 1991 Piccoli e grandi numeri in fisica
Numbers are often viewed as a matter for end-of-chapter problems. Actually numerical estimates of physical quantities are of utmost importance: significant examples of them should always accompany the discussion of physical laws. When is the measure of a physical quantity merely conventional, […]
Anno XXXII - n.3 - luglio/settembre 1999 Quando la termodinamica incontra la meccanica: bilanci energetici di oggetti in movimento
In the study of subjects at the borderline between Thermodynamics and Mechanics, typical aspects of one of the two sciences are sometimes overlooked and incomplete, contradictory or partially erroneous descriptions are given. We find this type of difficulty in situations where there are objects in motion and, […]
Anno XLIX - n.1 - gennaio/marzo 2016 “Relatività”: le insidie di un nome
The name “relativity theory” was an unfortunate choice and Einstein was unhappy about it.Some critical aspects are briefly discussed about use and misuse of that name in epistemology, in popular culture and within the philosophical debate of the time in Italy […]
Anno XLVI - n.4 - ottobre/dicembre 2013 Scienza, Nanoscienza, Fantascienza
The term “nanoscience” is explained and illustrated by examples that can help to understand its scope and its importance for everyday life. […]
Anno XLVIII - n.1 - gennaio/marzo 2015 Sfaccettature dello spazio-tempo nella relatività generale: il calcolo di Regge
One of the most innovative and fruitful contribution to theoretical physics by Tullio Regge (1931-2014) is presented. Known as “Regge Calculus”, it consists of a formulation of the General Relativity developed in the celebrated paper “General Relativity without Coordinates”, published in 1961 in the Nuovo Cimento. […]