Sobre a primeira lei da termodinâmica: as diferenciais do calor e do trabalho On the first law of thermodynamics: heat and work differentials

Abstract

We treat some subtleties concerning the First Law of Thermodynamics and discuss the inherent difficulties, namely the interpretation of the heat and the work differentials. By proposing a new differential equation for the First Law, which is written using both system and neighborhood variables, we overcome the mentioned difficulties and establish a criterion for the definition of heat and work.

Keywords

• First Law
• heat
• work