Spherical Earth
The Spherical Earth, or how we came to know that the Earth is round.
Sabrina has been sleuthing in some flat-Earth groups and is unconvinced, so takes us on a journey back to Ancient Greece to tell us about how it was worked out there that the Earth is a sphere.
Contact us: Twitter and Instagram @SciClubPod or email ScienceClubPod@gmail.com
Sci Club Podcast is created by Sabrina Wilson, Tyler Sudholz and John Lavery. Audio editing also by Tyler Sudholz.
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SABRINA'S REFERENCES:
Gracie Cunningham tik tok https://vm.tiktok.com/ZSQPDW78/ & https://vm.tiktok.com/ZSQPk9Vo/
Conspiracy Theory Categorisation Pyramid Tik Tok https://vm.tiktok.com/ZSXYRhEq/
David K. Lynch, "Visually discerning the curvature of the Earth," Appl. Opt. 47, H39-H43 (2008)
Altitude of the ISS: https://www.heavens-above.com/orbit.aspx?satid=25544
Barrel Distortion: https://www.edmundoptics.com/knowledge-center/application-notes/imaging/distortion/
About Eratosthenes https://www.britannica.com/biography/Eratosthenes
Carl Sagan on Eratosthenes from Episode 1 of Cosmos: https://www.youtube.com/watch?v=G8cbIWMv0rI
Good article from The Conversation on the topic: https://theconversation.com/you-dont-need-to-build-a-rocket-to-prove-the-earth-isnt-flat-heres-the-simple-science-88106