Tool-making has been an essential part of humankind's survival. The earliest manipulation of material to form tools soon led to the development of the six simple machines--the pulley, inclined plane, wheel, lever, wedge and screw—which allowed for the construction of more complex machinery. Mechanical engineering developments allowed for intricate mathematical and astronomical aids, for the increased production of agriculture, and the following the Industrial Revolution, the development of mass manufacturing plants.
- Applied mechanics - The practical applications of mechanical engineering
- Boilers - A vessel in which fluids are heated in order to generate energy
- Elevators - Devices which move people or freight in a vertical fashion
- Manufacturing & production - Various issues dealing with the manufacture and production of electronics
- Mechanisms, systems & devices - Topics related to various mechanical systems, devices and components
- Mechatronics - A combination of electrical engineering, mechanical engineering, computer engineering, control engineering, and systems engineering to design and manufacture useful products
- Turbines - Devices which convert power from fluid flows, usually water or wind, into mechanical energy
This category has the following 7 subcategories, out of 7 total.