Flat Earth Consequences vs. Eratosthenes & Shadows

Regarding the sources of error in ancient measurements and the use of sextants and gnomons, in particular with regard to Eratosthenes and the measurement of the Earth’s circumference: You will find all of these covered in reasonable detail in undergraduate astronomy textbooks.

Two pretty interesting sources that are available online are:

THE OBLIQUITY OF THE ECLIPTIC, by George F. Dodwell
http://www.setterfield.org/Dodwell_Manuscript_1.html
Excerpts in this video are from chapters 2 & 5.

A History of Measures: The Circumference of the Earth
by Livio C. Stecchini
http://www.metrum.org/measures/index.htm

Link to Flat Earth Consequences video: https://youtu.be/EYWW8LTdNso

Post Author: hatefull