Mechanical engineering including mechanical and chemical engineering. At its simplest, thermodynamics is the study of energy, its use and transformation through a system. Typically, engineering thermodynamics is concerned with changing energy from one form to another. As an example, automotive engines convert chemical energy (enthalpy) from the fuel into heat, and then into mechanical work that eventually turns the wheels. Thermodynamics principles are used by mechanical engineers in the fields of heat transfer, thermofluids, and energy conversion. Mechanical engineers use thermo-science to design engines and power plants, heating, ventilation, and air-conditioning (HVAC) systems, heat exchangers, heat sinks, radiators, refrigeration, insulation, and others.
What a Pushkin, what a son of a bitch! What a Pushkin, what a son of a bitch! "What a Pushkin, what a son of a bitch!" (; sometimes separated by exclamation mark instead of comma) is a catchphrase and winged word from Alexander Pushkin's correspondence with one of his friends, poet Pyotr Vyazemsky. The phrase commonly expresses a joy after finishing one's work and appears particularly in several Russian literary works. In a letter dated circa November 7 or beginning of October, 1825 Pushkin, celebrating his finished drama "Boris Godunov" wrote to Vyazemsky: That was preceded by what Pushkin wrote to Vyazemsky on July 13 of the same