Mechanical Engineering is perhaps the most diverse and versatile of the engineering disciplines. In addition to physics and mathematics, it encompasses key elements of aerospace, electrical, civil, chemical, materials science and bio-engineering. Mechanical engineering touches virtually every aspect of modern life, from mobile phones and biomedical devices to aircrafts and power plants. Mechanical engineers not only deal with engineering aspects, but also with economic issues, from the cost of a single component, to the economic impact of a manufacturing plant. Besides this, mechanical engineers can also be found in sales, engineering management, and corporate management. Versatility is another unique advantage in a world that is undergoing constant economic, political, industrial, and social change. Mechanical engineers are educated and positioned, not only to adapt, but to define and direct change.