Claudius Ptolemy - Perth Observatory

Claudius Ptolemy, Latin in full Claudius Ptolemaeus (born c. 100—died c. 170), was an Egyptian astronomer, mathematician, and geographer of Greek descent who flourished in Alexandria during the 2nd century. The name Claudius Ptolemaeus is composed of the Greek name Ptolemaeus and the Roman name Claudius. However, he is believed to have been born in Thebaid […]

Longitude by wire and wireless

Ancient Astronomers Archives - Perth Observatory

Australian Sky & Telescope May - June 2022 (Digital)

Claudius Ptolemaeus

Ptolemy's Observatory, 2nd Century Ad by Sheila Terry

Geography & Planography - Iconographic Encyclopædia of Science, Literature, and Art

The Project Gutenberg eBook of History of Geography, by J. Scott Keltie and O. J. R. Hoowarth.

Longitude by wire and wireless

3 Spatial Thinking in Everyday Life, at Work, and in Science, Learning to Think Spatially