What happens if you take FLAT EARTH seriously!?

Physics Explained June 21, 2025
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Physics Explained

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Physics Explained is a channel that explores advanced topics in physics without skimping on the mathematical detail. There is a growing community of independent learners who are keen to explore modern ideas in physics with the aid of mathematical reasoning. This channel aims to tackle advanced topics head on whilst at the same time providing a historical narrative to help provide context to the ideas. A bit about my educational background: I have a PhD in theoretical physics, specialising in string theory. I now dedicate most of my my time to physics education. You can help support this channel via the Physics Explained Patreon account: https://www.patreon.com/physicsexplained

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Go to https://groundnews.com/physics to stay fully informed about physics, other sciences, and more. Subscribe through my link to get 40% off the unlimited vantage plan, the same one I use, which breaks down to just $5/month with my discount. You can help support this channel via the Physics Explained Patreon account: https://www.patreon.com/physicsexplained What happens when you take the ancient shadow experiment that first measured the Earth — and push it to its limits? In this video, we break down the logic behind Eratosthenes' method, apply it to dozens of cities, and test whether the Flat Earth model can survive the math. Spoiler: it can’t. You can follow me on instagram: https://www.instagram.com/physics_explained_ig You can follow me on X: https://twitter.com/PhysicsExplain1

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