The Greek mathematician, Euclid, limited the constructions in his Elements of Geometry to those that could be done with an unmarked straight edge and rudimentary compass. Ancient Roman dividers ...

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 ...

Thousands of miles were traversed, without the aid of sextants or compasses. The ancient Polynesians navigated their canoes by the stars and other signs that came from the ocean and sky.