09-14-2017, 02:39 PM
(09-14-2017, 02:23 PM)Bring4th_Jade Wrote: This is a really simple and easy to understand explanation by Carl Sagan of very simple geometry done by Eratosthenes 2500 years ago to prove a spherical earth and even measure its circumference. "Eratosthenes' only tools were sticks, eyes, feet, and brains - plus a zest for experiment."
That's a good video, but the flat earthers explain that away by claiming the sun is not millions of miles away, but much smaller and closer.
This video goes over a few of these ad hoc explanations, and is quite entertaining: