The invention and improvement of the steam engine propelled mankind into the age of steam, and the productivity of society developed greatly.
The Second Industrial Revolution
The application of electricity brought mankind into the electrical age.
The Third Scientific and Technological Revolution
The invention and application of electronic computers and the application of information technology brought mankind into the Information Age.
Categorization of science and technology
1, life sciences
2, space sciences
3, philosophy
4, natural sciences
5, humanities
6, high and new technology