Aristarchus' and Eratosthenes' estimates of the Earth's size
Foaie de lucruA. G. Gomez (agg29@ou.ac.uk)
Archimedes' models of the universe, according to Hippolytus
Foaie de lucruA. G. Gomez (agg29@ou.ac.uk)
Earth's shadow length (using Chauvenet's increasing factor)
Foaie de lucruA. G. Gomez (agg29@ou.ac.uk)