Articoli rivista
Cultura
Anno XXXI - n.4 - ottobre/dicembre 1998 Sul concetto di tempo: breve percorso storico alla luce delle attuali conoscenze di astronomia e di cosmologia
We show how since the first human rational speculation the concept of infinite has dominated the time and how the peculiarities with which it has been considered have been modified in the same time that the astronomical researches have become deeper. […]
Anno XXXI - n.1 - gennaio/marzo 1998 Sul galleggiamento dei corpi
The buoyancy conditions of solid homogeneous bodies floating in an ideal liquid are studied with special attention towards stable equilibrium. The case of a solid floating cylinder is discussed in detail. […]
Anno XLV - n.4 - ottobre/dicembre 2012 Sviluppi scientifici e tecnologici della superconduttività ad un secolo dalla scoperta
Superconductivity was discovered one hundred years ago. After a short history of its discovery we discuss the basics of the underlying physics, how it can be explained in school, examples of how it is now used and what might be the future possibilities. […]
Anno XLVII - n.4 - ottobre/dicembre 2014 Teorie fisiche: forma e sostanza. Un esempio
Beginning of the 19th century, aether and relativity: Lorentz was looking for space-time transformation rules fitting with the covariance of Maxwell?s equations under the change from aether to Earths reference frame. Meanwhile, Einstein was stating the identity of the laws of physics in any inertial frame and the rules of invariance of the speed of light in vacuum, […]
Anno XXIV - n.1 - gennaio/marzo 1991 Trasporto di inquinanti dal mare all’atmosfera
The bubble-breaking, droplet-ejecting mechanism is the main pathway of the mass-transport effect at water to air interface (primarily at sea-air interface, but also lake, river…). Surface-active organic material (SAOM) tends to concentrate at the water surface. The bubbles, produced primarily by breaking waves, […]
Anno XXIX - n.2 - aprile/giugno 1996 Un problema “reale” per capire la fisica
Tacking a Real World Problem for Understanding Physics. Scientific knowledge is a complex game aimed at constructing a representation of reality characterised by specific questions, languages, ways of operating. Acquiring scientific knowledge therefore involves the ability of thinking and operating within a representation of reality, […]
Anno XXIX - n.4 - ottobre/dicembre 1996 Universo come oggetto fisico
Philosophers and scientists of antiquity used to speak of material things or bodies, by taking for granted that world was naturally divided into separate objects. Probably that notion is due to the fact that we are living in a comparatively cold sur-rounding (the surface of the Earth), […]
Anno XXV - n.3 - luglio/settembre 1992 Venti anni di effetto fotoelettrico (1887-1905)
After a concise description of the experimental aspects of the photoelectric effect, this article gives an account of me history of its discovery and of the research that followed, and discusses its contribution to the radical changes in the conceptual framework of physics from the last decade of the past century to Einstein’s work of 1905. […]