Mechanical Engineering is the discipline that deals with motion and energy, including the transformation of energy from one form to another, its transmission, and its utilization. Mechanical engineers conceive, plan, design, and direct the manufacture, distribution, and operation of a wide variety of devices, machines, and systems for energy conversion, environmental control, materials processing, biomechanics, fluid dynamics, automated manufacturing, materials handling, and other purposes. Mechanical engineers are engaged in all the engineering functions, including creative design, applied research, development, and management.