Eratosthenes' calculations of the size of the Earth were very precise and very accepted during Columbus' time. Still, Columbus was convinced that the world was significatively smaller and that getting ...
How did the Egyptian engineers of the Third and Fourth Dynasty construct the Pyramids and Sphinx without modern science and mathematics? [closed]
What was the "state of the art" in engineering, science, and mathematics in Ancient Egypt when the Sphinx and the Giza Pyramids were built during the Third and Fourth Dynasties? How did they ...