AlienSpaceBat » Mon Sep 05, 2016 2:46 pm wrote:maco144 » 05 Sep 2016 00:10 wrote:dada » Sun Sep 04, 2016 1:57 pm wrote:The globe is big. People and planes are small. Flying at 30k feet is barely getting above the surface of the planet. Five or six miles is not very far, I think we can all agree on that. The horizon naturally still looks like the horizon.
You can just use your mind for this one. Picture an apple one mile in diameter. Put a little ant on it. Apple looks flat from ant's perspective. Now bring ant ten, twenty feet away from apple. Apple still looks flat to ant.
Or maybe we're not supposed to trust our own imaginations.
So when was this flat earth with no stars universe created? I'm guessing around six thousand years ago.
I agree with being a few miles above not being very high at all. When do you think the height should have relevance? You can watch rocket videos go 3-4x higher than a plane does and will still observe the same things being the horizon always rises to the eye and there is no visible view down the side of a globe.
On a globe one thing that would be clearly noticeable from a distance is that buildings such as skyscrapers would be angled away from the observer. If you were the ant on the apple and you were approaching Antropolis at the distance you first saw them until you got relatively close they would be tilted away from you as they would lie on the curve. We only perceive buildings as being completely vertical from afar because the earth is flat.
As to the age of the earth, I do not have any insight or even much speculation.
Lets see: Two buildings the height of the Burj Khalifa (830m) situated 20km apart on a globe 40,000km in circumference would have the tops 2.6m further away than the bases, measured in straight lines. This is 0.013% of the horizontal distance. Obviously lower buildings (or lower point of view) and closer distances would make this effect smaller.
I very much doubt that this 1 in 8000 change would be clearly noticeable to you.
At 20 km there would be ~100 feet of drop between the two buildings. At 50km it would be ~650 feet. The buildings face tilting away would clearly be recognizable.