1- The Wheel
Created before 3500 a. C., qualifies as a fundamental invention for human development, since from it it was possible to manufacture machinery and transport, among other things.
2- The Plow
It is a tool used to open holes and move the earth to plant seeds. It appeared there by 3500 a. C. in the towns of Mesopotamia.
Created in the 10th century, it was used to propel the projectiles of weapons. Nowadays it is used for fireworks.
4- The printing press
This mechanical method of reproducing texts and images generated a cultural revolution. It appeared between 1000 and 1400, in China, where it was used with rice paper.
5- Steam machine
For 1698 he made his great appearance and was widely used during the Industrial Revolution for the movement of machines.
6- The anesthesia
Since its introduction, in 1799, it had several variants regarding the analgesics that were incorporated; the ether dominated the market until 1960.
7- The telegraph
The German scientists Gauss and Weber installed, in 1833, a thousand-meter telegraph line to connect the university with the astronomical observatory of Göttingen, the town in which they worked.
8- Combustion engine
At first, when it was created in 1860, they still did not have compression and, instead, they worked with air and blown fuel.
It was discovered by Ernest Duchesne, in 1897, in France. It revolutionized medicine and gave a new focus to the production of antibiotics against infections.
10- The transistor
This electronic device, created in 1947, is an energy semiconductor. Today you can see it in appliances, radios and televisions.