Lil quick test using some PNW landmarks I'm familiar with...
(See reference chart of how much drop in elevation we should see due to earth's curvature over certain ground distances.)
Here's a photo ...
Refraction is a thing. A temperature dependent thing.
What you should really ask yourself is why can’t you always see the same amount of the mountain at all time when visibility isn’t limited?
What you should really ask yourself is why can’t you always see the same amount of the mountain at all time when visibility isn’t limited?