The sun is an actual object, around .5 degrees wide. It stays about that size the entire day.
I think, it appears smaller/bigger at times. I don't think it is always the same size, but I now that you mention it, I doubt it is as noticeable as telephone poles are. Although, the point to this thread is that the sun appears to meet the ground, for the same reason that the tops of high voltage towers appear to meet the ground or clouds, or jet planes or persistent jet trails do. In other words, it isn't because you're seeing over the edge of the earth (remember that huge drop that is supposed to be occurring) it is because of an optical illusion, illustrated by the photograph in the first post of this thread.
Get over it, over the course of a day the sun stays almost precisely the same size. Very near the horizon just after sunrise and just before sunset it might be a bit distorted.
Take a look at these photos, taken I might add by a Flat Earther trying to prove that the sun does change in size over the course of a day.
Now on Youtube there is a video made by a
the Flat Earther, Matrix Decode with very good photos of the sun through a filter (an arc welder's glass) showing the sun at a number of times of day from 9:30 AM to 7:00 PM on 9/March/2016 in Malaga, Spain.
The following screen shots from his video does an excellent job of proving that the sun size does not change!
Do I need to say more? Our kind Flat Earther,
Matrix Decode, has said it all!
The "sun does not appear to change it size until just before sunset" - a then only a little in height!
More explanation in
Flat Earth Debate / The Constancy of the Angular size of the Sun « by rabinoz on August 24, 2016, 08:12:47 PM ».Now over the course of a year the apparent size of the sun does change from a minimum of 31′31″ in July to a maximum of 32′33″ in January.