
06/17/2025
He Measured the Earth... with Just a Stick and a Shadow?! đ
Over 2,000 years ago, a Greek man named Eratosthenes pulled off one of the most mind-blowing calculations in history.
He didn't need satellites or space missions, just:
A stick đŞľ
The sun âď¸
And some clever thinking đ§
đ From Alexandria to Syene, he noticed that shadows behaved differently at the same time of day. So, he measured the angles, did the math... and estimated Earthâs circumference.
đ˛ The result? He was off by less than 2%.
Let that sink in.
No GPS. No high-tech tools. Just ancient geometry and brilliant curiosity.
He proved the Earth was round, long before most believed it.
So next time someone tells you math isnât useful, just remember: a guy with a stick once measured the size of the entire planet.