The legendary Carl Sagan brilliantly demonstrates how Eratosthenes proved a spherical Earth. Hard to believe that some people still deny this 2200 years later.
Showing posts with label Carl Sagan. Show all posts
Showing posts with label Carl Sagan. Show all posts
Friday, 8 September 2017
Carl Sagan - How We Know The Earth Is Round
The legendary Carl Sagan brilliantly demonstrates how Eratosthenes proved a spherical Earth. Hard to believe that some people still deny this 2200 years later.
Friday, 9 December 2016
4th Dimension - Tesseract, 4th Dimension Made Easy - Carl Sagan
Carl Sagan's Cosmos: A Personal Voyage
Friday, 29 January 2016
Carl Sagan - Globular earth deduced by Eratosthenes
A most simple deduction made around 200 bc by the Astronomer Eratosthenes. A Globular spheroid is our home
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