from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The total kinetic and potential energy associated with the motions and relative positions of the molecules of an object, excluding the kinetic or potential energy of the object as a whole. An increase in internal energy results in a rise in temperature or a change in phase.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. a property, characteristic of the state of a thermodynamic system, the change of which is equal to the heat absorbed minus the work done by the system
Sorry, no etymologies found.
As Italy is one of the most recently developed parts of the mainland and of the crust that has risen above the waters, it is subject to the phenomena that are due to that internal energy of the earth called volcanism, which is manifested in the various forms of volcanic activity, in earthquakes and in microseisms.