142) “People claim that if the Earth were flat, they should be able to use a telescope and see clear across the oceans! This is absurd, however, as the air is full of precipitation especially over the oceans, and especially at the lowest, densest layer of atmosphere is NOT transparent. Picture the blurry haze over roads on hot, humid days. Even the best telescope will blur out long before you could see across an ocean. You can, however, use a telescope to zoom in MUCH more of our flat Earth than would be possible on a ball 25,000 miles in circumference.”

Actually, sort of true. A little bit, but not much. However..

So the explanation here isn't bad. Yes, images lose coherence over such a distance that they probably won't be visible over long distances.

However, things like 'pulsing' lights have far longer visibility, and can even be found in the 'light signal' of a photodiode if they aren't visible with the naked eye. I had to do this for an experiment once; it is one of the many techniques to evade strong (white) noise.

The explanation does certainly fail, however, when you notice that the horizon-distance is such that under normal circumstances, they obey the formula found using the non-flat earth theory. And, what's more, when you don't find it you do find non-normal circumstances...

Luckily, the point ends with a claim made without explanation or foundation.

http://blog.daimonie.com/2015_11_01_archive.html

Again, the "blurry haze" is called refraction and it has nothing to do with magnification. Secondly, utilizing radio/radar we can thoroughly debunk the claim that we can't see the earth beyond the horizon because of atmospheric obstruction. And again, the following video sums up the logical inconsistencies of the so-called "law of perspective" and explains how radar/radio disprove the weather/atmosphere-claim:

(Start at 06:33. Warning: Harsh language!)

http://200proofsearthisnotflat.blogspot.co.uk/2016/02/debunking-dubay-140-149200.html