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Is there an equation that produces the amount of curvature of the Earth one should see at the altitude of x (whatever x may be)? I imagine it would be a complicated equation, and not as simple as people who believe the earth is flat say. (of course it isn't that simple, they always forget to include altitude)

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marked as duplicate by kwinkunks, Fred, arkaia, daniel.neumann, Jan Doggen Jan 12 '18 at 9:44

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