Most people believe the below model and measurements are true, as it is parroted and thrown deep into the subconscious when at school between the ages of 7 and 12. Even those clever astrophysicists preach these dimensions.
But if the above was true, then the curvature mathematics MUST be as such:
Please prove me different if this is not the case - I know you cannot, and some have tried. One scientist told me the curvature maths is 8 inches curvature for EVERY mile, but this would mean we all lived on a slope and not a curve. In the ball earth model It would always be only the FIRST mile from the observer that has an 8 inch curvature, then of course it would increase (be squared).....because it is a ball and not a slope. (This is not too difficult, re-read this paragraph if you need to).
Ok - the other day I was in a national park at the south east tip of Spain - and it was so clear in the morning I could see Algeria (though at first I thought this was Morocco).
So I could see land that was at least 95 miles away according to Google Earth. Land that was not too mountainous, and around 80m - 200m high according to Google Earth.
So if we bring in the curvature mathematics, a location 95 miles away should have been 6000 feet below the horizon (the curvature for 95 miles is 95 x 95 = 9025 x 8in = 72200in / 12 = 6016 feet).
That is 1.828Km (nearly two kilometres). Let's be super generous and take into account me being 200m above the sea and the Algerian mountains being 200m above the sea - so let's be even more generous and shave off a whole one Km - the land I SAW WITH MY EYES should still have been nearly one whole kilometre below the horizon!
The earth is flat, and this map below is going to grow and grow in the coming years, as the conditioned minds slowly wake up.
For more information on similar curvature proof, look no further than this article on lighthouses and the incredible distances that they have been seen. Or one could explore this book from 1901, or look into the long bridge in China.....or, bury their head in the sand and scream graaaaavity.