AFAIK, there wasn't any stick in Syene, but rather a well. And in Alexandria it was a column or an obelisk (and not a stick). https://lidimatematici.files.wor

AFAIK, there wasn't any stick in Syene, but rather a well. And in Alexandria it was a column or an obelisk (and not a stick). https://lidimatematici.files.wordpress.com/2010/11/eratostene-1111.jpg https://lidimatematici.files.wordpress.com/2010/11/eratosten... It would make sense as the shadow of a stick would have been very short, and would have introduced a huge error when measuring it.