Illustration showing how the golden ratio in a regular pentagon (inscribed in a circle) can be found…

A diagram showing the order of the universe as expounded by Ptolemy. Its basic concept surmises that…

Claudius Ptolemaeus, known as Ptolemy, was an ancient geographer, astrologer, and astronomer.

Claudius Ptolemaeus, known as Ptolemy, was an ancient geographer, astrologer, and astronomer.

He was a mathematician, geographer, astronomer, and astrologer. "The name of a line Graeco-Egyptain…

"In 1799, the Rosetta Stone was found and gave the first key to the reading of hieroglyphics. On this…