>>9476269
Here s the trig chart and a link to an Earth curve calculator.
They ll try and tell you flat Earth is a meme, but you can measure it. It s not hard and it dosen t take long. Overcoming the cognitive dissonance takes longer.
There no scientific experiment that demonstrates and proves that a body of water holds a convex shape. The Earth is 70% covered in water.
You could observe and measure a flat ocean line or find an image of two land marks with a flat water line between them and measure that and calculate the curvature. It s not going to be there.
https://dizzib.github.io/earth/curve-calc/?d0=30&h0=10&unit=imperial