serif::dimensions::Entropy serif::dimensions::ThermodynamicQuantity dimensions.hpp std::string_view std::string_view serif::dimensions::Entropy::identifier identifier serif::dimensions::Entropy::identifier = "entropy" Dimension of Entropy. serif::dimensions::Entropy serif::dimensions::PhysicalQuantity serif::dimensions::ThermodynamicQuantity serif::dimensions::Entropy identifier serif::dimensions::PhysicalQuantity serif::dimensions::ThermodynamicQuantity std::basic_string_view< Char > std::string_view serif::dimensions::Entropyidentifier