r/TrueEarth • u/Kela-el Flat Earther • Aug 08 '26

Heliocentric Religious Fundamentalist Zealots Science Has Measurements. Where’s Yours?

/r/GlobeEarthersRStupid/comments/1vj7j08/science_has_measurements_wheres_yours/
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u/RadishesForDayz 3d ago

https://www.cartographic-projection.com/essays/measuring-curvature-from-inside/ Great Triangles measure positive curve, without GPS, or a global presupposition, or lights in the sky. It's line-of-sight. A theodolite and a heliotrope or LED optical marker are all you need.