What is the main reason of the discrepancy I found here?
6
175Ṁ178resolved Apr 26
100%36%
Wrong identification of the hills
12%
Misalignment between hilltops and horizon in the pictures
15%
Wrong distance or altitude of the hills or reference point
13%
Atmospheric refraction
1.9%
The Earth is not spherical
7%
Local geographical features
15%Other
Trying to measure the radius of the Earth with simple observations following Al Biruni’s method: https://mariopasquato.substack.com/p/its-easy-to-say-abu-rayhan-muhammad
It doesn’t work that much. Order of magnitude is right, but the number is off.
Resolves to my own assessment a month from now.
This question is managed and resolved by Manifold.
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