Thermodynamics is the branch of physical science concerned with the interrelationship and interconversion of different forms of energy, in particular, thermal energy, heat. On a more generalized level, one can say it is the study of how energy transforms matter through processes, the structures or order that emerge out of these transformations and how we can describe those states of order and disorder in terms of information and the capacity to do work. Thermodynamics may be divided into non-equilibrium and equilibrium thermodynamics. The theory of equilibrium thermodynamics is captured within the Zero, First, Second and Third Laws of thermodynamics, that are a central part of modern science used in many different domains of the natural sciences.