The ancient Greek roots of the cross symbol, its significance in cosmology, religion, and philosophy, long before ...

Its dynasties gave rise to incredible inventions like paper, gunpowder, and the compass. The Great Wall ... and the Olympics.

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 ...

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 ...