I went over this. If it circled over a disc, it wouldn't be able to disappear over the horizon and would instead curve out of view near the bottom right/left.
No because the horizon remains level no matter how high you are. So when you are on the ground, the sun just travels away until it dips below objects above your horizon. If you were to elevate a couple thousand feet after sunset, the sun would return into your view. You do not notice it curve, even in summer in Northern Canada because the curve is massive, only a few degrees across the entire country.
I truck on the ice roads you see on tv. When I am very far north, like lat 60, you can see the glow of the sun after sunset circle to the north (over Russia, China) and rise in the east. Look into time zone changes between Alaska and Russia, it is hilarious.
It looks that way because the earth isn't flat. On a flat earth, again, the sun would never disappear over the horizon. Ever. That is literally impossible. If you roll a marble down an infinitely long flat plane, the marble never dips below the plank. That would make it a ghost marble. Similarly, an object circling above a plane can never drop below it. (Obviously it could disappear behind a feature like a mountain, but never the ocean.) Even visually. It would simply shrink in a spot (very close, but still) above the horizon.
I went over this. If it circled over a disc, it wouldn't be able to disappear over the horizon and would instead curve out of view near the bottom right/left.
No because the horizon remains level no matter how high you are. So when you are on the ground, the sun just travels away until it dips below objects above your horizon. If you were to elevate a couple thousand feet after sunset, the sun would return into your view. You do not notice it curve, even in summer in Northern Canada because the curve is massive, only a few degrees across the entire country.
I truck on the ice roads you see on tv. When I am very far north, like lat 60, you can see the glow of the sun after sunset circle to the north (over Russia, China) and rise in the east. Look into time zone changes between Alaska and Russia, it is hilarious.
It looks that way because the earth isn't flat. On a flat earth, again, the sun would never disappear over the horizon. Ever. That is literally impossible. If you roll a marble down an infinitely long flat plane, the marble never dips below the plank. That would make it a ghost marble. Similarly, an object circling above a plane can never drop below it. (Obviously it could disappear behind a feature like a mountain, but never the ocean.) Even visually. It would simply shrink in a spot (very close, but still) above the horizon.