One of the standards of the past, that shows that the earth isn't flat, but that it is rather spherical, is that of sailing ships.
On a rather calm yet breezy day, get out to the ocean. Through a telescope, watch a sailing ship coming in towards land. At a great distance away, only the topmost parts of the masts are visible on the horizon. As the ship approaches, more of the masts become visible. Finally, as the ship is reasonably close, the whole of the ship that is above water becomes visible.
On a rather calm yet breezy day, get out to the ocean. Through a telescope, watch a sailing ship coming in towards land. At a great distance away, only the topmost parts of the masts are visible on the horizon. As the ship approaches, more of the masts become visible. Finally, as the ship is reasonably close, the whole of the ship that is above water becomes visible.
This is the best reply. You can do the same thing at sunset over a clear horizon; when you squat down the sun appears to have sety but once you stand up you'll see more of the sun, thus proving the earth is round because your height is enough to allow you to see further over the horizon...
Moron, the horizon rises to eye level increasing the distance you can view objects. Anybody who belives that ships sail over the curve is a total fucking retard.
Dingbat. The horizon never rises to meet anything. The moon rises. The sun rises. The horizon just sits there.
Hang a plumb line. Then, stand and look straight ahead, horizontally, 90 degrees to the plumb line. Or use a transit. On level ground or water, the horizon never meets the center of the eye, or the center, horizontal line of the transit. The only reason the eye sees the horizon from this position is peripheral vision.
Of course, not batman. Battyman.
