FAQ

What is the Internal Energy?
The internal energy of a thermodynamic system is the energy contained within it. It is the energy necessary to create or prepare the system in any given internal state. Internal Energy is usually measured using the Joule for Energy. Note that the value of Internal Energy is always negative.
Can the Internal Energy be negative?
Yes, the Internal Energy, measured in Energy can be negative.
What unit is used to measure Internal Energy?
Internal Energy is usually measured using the Joule[J] for Energy. Kilojoule[J], Gigajoule[J], Megajoule[J] are the few other units in which Internal Energy can be measured.
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