Internal Energy of The Ideal Gas
Thermodynamics often uses the concept of the ideal gas for teaching purposes, and as an approximation for working systems. The ideal gas is a gas of particles considered as point objects that interact only by elastic collisions and fill a volume such that their free mean path between collisions is much larger than their diameter. Such systems are approximated by the monoatomic gases, helium and the other noble gases. Here the kinetic energy consists only of the translational energy of the individual atoms. Monoatomic particles are not considered to rotate or vibrate, and are not electronically excited to higher energies except at very high temperatures.
Therefore practical internal energy changes in an ideal gas may be described solely by changes in its kinetic energy.
Read more about this topic: Internal Energy
Famous quotes containing the words internal, energy, ideal and/or gas:
“When a person doesnt understand something, he feels internal discord: however he doesnt search for that discord in himself, as he should, but searches outside of himself. Thence a war develops with that which he doesnt understand.”
—Anton Pavlovich Chekhov (18601904)
“The persons who constitute the natural aristocracy, are not found in the actual aristocracy, or, only on its edge; as the chemical energy of the spectrum is found to be greatest just outside of the spectrum.”
—Ralph Waldo Emerson (18031882)
“And he said, That ought to make you
An ideal one-girl farm,
And give you a chance to put some strength
On your slim-jim arm.”
—Robert Frost (18741963)
“When we can drain the Ocean into mill-ponds, and bottle up the Force of Gravity, to be sold by retail, in gas jars; then may we hope to comprehend the infinitudes of mans soul under formulas of Profit and Loss; and rule over this too, as over a patent engine, by checks, and valves, and balances.”
—Thomas Carlyle (17951881)