Articoli rivista
Anno XXXIV - n.1 - gennaio/marzo 2001 Le code delle comete: effetto delle forze di radiazione
The combined effects of the Sun’s gravitational attraction and of the pressure of radiation allow to calculate the maximum dimensions of electrically neutral dusts in one of the tails of a comet. […]
Anno XXXVII - n.1 - gennaio/marzo 2004 Le due definizioni di rendimento termico
In a previous paper, the same author showed that the usual definition of thermal efficiency of heat engines becomes intrinsically ambiguous when applied to cycles in which the system exchanges heat in both senses with the same thermal reservoir, and proposed two ways in which (in order to resolve this ambiguity) the elementary definition can be precised, […]