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.
Legend of the Guardians: The Owls of Ga'Hoole "Legend of the Guardians" is the in-flight movie on the aircraft piloted by Carol (Matt Damon), who claims his passengers "... think that $300 and a photo ID gives them the right to fly through the air like the guardian owls of legend!" In a 2014 episode of "The Simpsons", "Specs and the City", Bart considers giving Nelson an "Owls of Ga'Hoole"-themed Valentine, finding it fitting that Nelson should get a Valentine referencing what Bart considers a bad movie. Legend of the Guardians: The Owls of Ga'Hoole Legend of the Guardians: The Owls of Ga'Hoole is a 2010 American-Australian 3D