We’ve all seen the 8in per square mile calculations and and the globe side they said “but you don’t account for the height of the observer” and/or “it’s not a parabola”

https://math.stackexchange.com/questions/1896238/how-to-calculate-curvature-of-earth-per-surface-kilometer

or “you don’t account for the elevation of the ground itself”

Here is my question then, if I’m flying on the North American continent, at 37,000′ MSL and I see a mountain peak at 400miles away technically, at 400 …