-
The paper was created by the chinese people in the 2nd century B.C, but it wasn't until the 12th century when it became to be manufactured in Europe.
-
Invented in Europe as the pivotable post mill it was efficient at grinding grain or draining water. The first mention of one is from Yorkshire in England.
-
The astrolabe is a very ancient astronomical computer for solving problems relating to time and the position of the Sun and stars in the sky.
-
The compass is a tool that helps the user navigate using the Earth’s magnetic poles by using a magnetized pointer that reacts to magnetic fields.
-
It was invented by Gutemberg.
With this invention knowledge could be spread all over the world.
