Tag
equatorial vs polar circumference
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The Earth’s Circumference: How Many Miles Around and Why It Matters
The first recorded attempts to calculate Earth’s size date back to ancient Greece, where Eratosthenes used shadows and geometry to estimate the circumference...
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The Exact Answer to How Many Miles Around the Earth and Why It Matters
The first person to calculate this with remarkable accuracy was Eratosthenes of Cyrene in the 3rd century BCE, using nothing but shadows, geometry, and the...