This incredibly accurate science experiment was centuries ahead of its time. | Business Insider
2:02
This incredibly accurate science experiment was centuries ahead o…
24.5M viewsOct 28, 2016
FacebookBusiness Insider
Over 2,000 years ago, Eratosthenes proved the Earth was round and measured it using only shadows and basic math. On the summer solstice, he noticed that while objects cast shadows in Alexandria, they didn’t in Syene. That tiny clue unlocked the secret of Earth’s size: 40,000 km, nearly perfect by modern standards. His work survived despite the tragic loss of the Library of Alexandria, while Ptolemy’s later miscalculations led Columbus astray. | Lost in History
0:06
Over 2,000 years ago, Eratosthenes proved the Earth was round and m…
18.8K views9 months ago
FacebookLost in History
Eratosthenes
Eratosthenes
Mar 3, 2022
worldhistory.org
How the ancient Greeks proved Earth was round over 2,000 years ago
How the ancient Greeks proved Earth was round over 2,000 years …
Dec 27, 2017
BUSINESS INSIDERBusiness Insider
Eratosthenes (276-195 BC)
Eratosthenes (276-195 BC)
Feb 5, 2014
weebly.com
How the ancient Greeks proved Earth was round over 2,000 years ago
0:17
How the ancient Greeks proved Earth was round over 2,000 years …
Dec 28, 2017
The IndependentLydia Spencer-Elliott
Eratosthenes: The Genius Who Measured Earth's Size 🌎✨ #Astronomy #ScienceFacts #HistoryOfScience #AncientGreece #Eratosthenes #EarthCircumference #ScientificDiscovery #EducationalContent #AmazingScience #AstronomyLovers #LearnWithUs #ScienceHistory #Mathematics | Astronomy Matters
0:59
Eratosthenes: The Genius Who Measured Earth's Size 🌎✨ #Astron…
383 viewsJul 12, 2024
FacebookAstronomy Matters
1:15
📏 Over 2,000 years ago, Eratosthenes used a pole, a shadow, and a ques…
393 views2 months ago
FacebookHope at Night
How Ancient Greek mathematician Eratosthenes calculated the Earth’…
Jan 5, 2018
protothema.gr
0:53
Carl Sagan describes how the ancient Greeks knew that the Eart…
1.1M viewsFeb 5, 2025
FacebookHistory In Pictures
How Eratos­thenes Measured The Earth's Circumference With A Stic…
4 months ago
iflscience.com
Eratosthenes' Experiment: Fascinating Video Explains How H…
Oct 24, 2017
thinkinghumanity.com
3:33
Informative Facts about Christopher Columbus
4 views3 weeks ago
YouTubeHistoric Feels
1:36
Medieval People KNEW Earth Was Round – Flat Earth Myth Exposed!
1K views1 month ago
YouTubeNightCreeps
0:31
The 1492 Flat Earth Lie #shortvideo #ancienthistory #mythbusters #fla…
2 weeks ago
YouTubeAncientWonder
0:43
Eratosthenes: The Ancient Genius Who Measured the World
921 views4 weeks ago
YouTubeOld Story Teller Man
7:29
Eratosthenes
70.3K viewsMar 9, 2012
YouTubeMITK12Videos
10:31
Is Earth Actually Flat?
38.2M viewsDec 4, 2014
YouTubeVsauce
0:44
MythBusters - Creaming the Cube
916.5K viewsJun 2, 2008
YouTubeDiscovery
9:58
Eratosthenes Calculates Radius of Earth
12.3K viewsMar 2, 2017
YouTubeGreg Clements
3:57
Eratosthenes: Biography of a Great Thinker
53.9K viewsDec 9, 2013
YouTubeSocratica
10:11
Flat Earth vs. Round Earth | Explorer
6.3M viewsJan 16, 2019
YouTubeNational Geographic
8:47
How a Virus Spreads So Easily | MythBusters
1.1M viewsMar 30, 2020
YouTubeScience Channel
14:36
Flat Earth Theory - How Was It Debunked 2,000 Years Ago?
388.5K viewsJul 31, 2019
YouTubeInvicta
4:06
Sieve of Eratosthenes (finding prime numbers)
23.1K viewsFeb 24, 2020
YouTubeMath Mammoth
5:29
Eratosthenes: measurement of the Earth's circumference
6.7K viewsMay 6, 2015
YouTubePhyCheMa
8:31
Eratosthenes - Measuring the Circumference of Earth
32.1K viewsJun 28, 2018
YouTubeTMartScience
7:49
How the Ancient Greeks Proved that the Earth was Round
343.5K viewsOct 11, 2019
YouTubeRealLifeLore2
4:20
How Eratosthenes discovered the radius of the earth
17K viewsFeb 17, 2016
YouTubeMath in color
4:10
Carl Sagan explains how Eratostenes knows the earth is cu…
261.2K viewsDec 7, 2015
YouTubeMauricio Sagredo
See more videos
Static thumbnail place holder