Mechanical engineering is a discipline of engineering that applies the principles of engineering, physics and materials science for analysis, design, manufacturing, and maintenance of mechanical systems. It is the branch of engineering that involves the production and usage of heat and mechanical power for the design, production, and operation of machines and tools, It is one of the oldest and broadest engineering disciplines.

Mechanical engineering relates to the design and manufacture of mechanical systems – such as those used to power vehicles, industrial equipment and production lines, medical technologies and military equipment. Further specializations within this field include robotics, thermodynamics, technical drawing, nanotechnology and structural analysis.

Mechanical engineers are committed to the use of technology to improve the quality of life for society. Mechanical engineering covers a broad range of subjects. Many mechanical engineers specialize in areas such as materials, dynamics and controls, product design, manufacturing, energy and thermodynamics, and mechanics.