An irreversible process increases the entropy of the universe. However, because entropy is a state function, the change in entropy of the system is the same whether the process is reversible or irreversible. The second law of thermodynamics can be used to determine whether a process is reversible or not.
Poblacion or poblaciÃ³n (literally town or population in Spanish) is the name commonly used for the central, downtown, or central business district area of a Philippine city or municipality, which may take up the area of a single barangay or multiple barangays. It is sometimes shortened to Pob.. 1 History.
Freebase(0.00 / 0 votes)Rate this definition: Del. Del, or Nabla, is an operator used in mathematics, in particular, in vector calculus, as a vector differential operator, usually represented by the nabla symbol â. When applied to a function defined on a one-dimensional domain, it denotes its standard derivative as defined in calculus.