Just because the bottom of something is hidden, does not automatically make the curve the reason behind it.
This an irrefutable fact of how you view the world around you and easily tested by laying on the ground and having someone walk away from you over a distance. The object in question disappears bottom up because the view of your angle is limiting its range creating a "false horizon". This is shown clearly by watching ships disappear over the "horizon" only to be brought back into view with modern magnification equipment. The curve did not hide the bottom of the object, the ground did. And the ground did it at less than the distance needed for curvature to take great enough effect to achieve the same result.
One can raise their viewing angle and see further but the ground will cover their view. Their angle of perspective determines the distance to the false horizon whereby the object "shrinks" to converge at this center line. The bottom disappears first due to the ground.
Resolution is the shortest distance between two points that a user can still see as separate images. This is why the object shrinks to the center line and the ground is the reason why the bottom of the object "disappears" first. This is shown at distances well below the required amount allotted for curvature effect and done on any scale.
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[–] FacelessOne 1 point -1 points 0 points (+0|-1) ago
Dam you and your empirical evidence.
[–] ifuckdolphinseverday [S] 1 point 0 points 1 point (+1|-1) ago
Trigonometry is hard.