Engineering and Technologies are, in the first instance, simply extensions of the human body, allowing us to overcome the physical limitations with which we are born, and to adapt the natural environment to our own needs.
Technologies are inventions of humans that have allowed us to survive, and have enabled our cultures to advance. They are for the most part material objects: tools, for example, are simply detachable additions to the body, the manufacture of which generally distinguishes humans from animals.
Like any other subjects, engineering has many branches and new branches evolve in due of advancement of technology. This section provides definitions of the branches in engineering and briefs the basic understanding of known branches of engineering.