transfer lengths from one drawing to another, and draw circles. The Greek mathematician, Euclid, limited the constructions in his Elements of Geometry to those that could be done with an unmarked ...

Primarily, the compass was used for geomancy for a long time before it was used for navigation Ancient Chinese alchemists realized that the magnetite ore would point towards a magnetic north. Their ...

In 1508, Nicolaus Copernicus developed a celestial model of a heliocentric planetary system that transformed the way we view the universe. This bold theory, contrary to the geocentric ...