Noun
internal energy (countable and uncountable, plural internal energies)
(physics) 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.
As with all my work, whether it's a leaf on a rock or ice on a rock, I'm trying to get beneath the surface appearance of things. Working the surface of a stone is an attempt to understand the internal energy of the stone. Andy Goldsworthy
A calorimeter is a device which is used to measure and define the internal energy of a system. Source: Internet
A nuclear isomer may also be called a " meta -state", meaning the system has more internal energy than the " ground state " (the state with the lowest possible internal energy), making the former likely to decay into the latter. Source: Internet
For an ideal gas the internal energy is given by : where is the number of degrees of freedom divided by two, is the universal gas constant and is the number of moles in the system (a constant). Source: Internet
Due to this increase in pressure, the parcel's volume decreases and its temperature increases as work is done on the parcel of air, thus increasing its internal energy, which manifests itself by a rise in the temperature of that mass of air. Source: Internet
Anything that passes across the boundary that effects a change in the internal energy needs to be accounted for in the energy balance equation. Source: Internet