Blogotariat

Oz Blog News Commentary

of the importance of measurements...

September 5, 2021 - 11:22 -- Admin

landerlander

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Aswan, at approximately 24 degrees north latitude, lies very near the Tropic of Cancer (23°27′ N), and at this latitude, near the time of the summer solstice, the Sun is (roughly) 90 degrees above the horizon at noon...

 

--------------------------

Around 245 BC, when Eratosthenes was in his 30s, he was working as a librarian in the famous Library of Alexandria in Egypt.

He read about a water well in the city of Syene (modern-day Aswan in southern Egypt).

read more