ABSTRACT
When heat flows into a thermodynamic system (e.g., a glass of water), the system stores this energy as what we call internal energy (U).
Microscopically, this internal energy is the motion of the atoms or molecules of the substance.
When heat flows into a thermodynamic system (e.g., a glass of water), the system stores this energy as what we call internal energy (U).
Microscopically, this internal energy is the motion of the atoms or molecules of the substance.