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Ah. The distance you can see is limited not by the curvature of the earth but by atmospheric conditions. Even on the clearest day air itself has a certain opacity. Even if the globe earth were real, this opacity would limit your vision before the globe earthers' curvature would. That's why you can't see all the way to the ice wall.
Was that your main objection to the truth of flat earth?
I don't have any objection. I just find it to be logically false based on personal experience and observation along with the application of simple geometry and math. It's a completely unemotional challenge to your stated claim.
For example, on a clear day. The human eye can see roughly 12 nautical miles. However, standing at sea level affords you only a few miles. Increasing your elevation can increase the distance of the horizon accurately to 12 miles by adjusting for the curvature of the earth. Additionally, you did not address the similar example I provided which uses high frequency RF which tends to not have it's line of trajectory impacted by atmospheric affects. This is equally calculable for the curvature of the globe, as I have done so multiple times when developing radar employment plans for use between military assets at sea.
Increasing your elevation can increase the distance of the horizon accurately to 12 miles
This is because you get into thinner atmosphere with increased elevation. Thinner atmosphere = lower opacity.
35-40 feet is a negligible level of atmospheric pressure and humidity difference. The power of RF similarly is not heavily impacted by average thermal and humidity layers in the atmosphere. It has return ranges well in excess of 50 nautical miles each direction, yet still the curvature theory proves accurate with it.
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