On the side of the coin on the left is the head of a man facing right, wearing the skin from an elephant's head, trunk turned up and tusks protruding out, small dots surround the border. The other ...
On the side of the coin on the left is a man's head facing right, with long curly tendrils of hair held in place with an ornamental headband, small dots surround the border. The other side of the coin ...
Ptolemy's Almagest is one of the most influential scientific works in history. A masterpiece of technical exposition, it was the basic textbook of astronomy for more than a thousand years, and still ...