My apologies. I might have been a bit testy because I'm having a bad day. I have described the test several times previously on this board, and I worry people might grow tired of hearing it. I ask your forgiveness. Create a direct, round trip path between any 3 points on the earth, forming a triangle. Make sure the points are at least 2000 nautical miles to get sufficient resolution. Add the interior angles of the triangle formed. It will add to more than 180 degrees. That proves the surface you have just covered is positively curved. And because this works with any 3 arbitrary points on the earth, this conclusively shows the earth can only be an ellipsoid of some kind. There is no mathematical possibility flat earth is a correct hypothesis. It does not require trust in anyone or any organization.
The technical term is "oblate spheroid". Which means a bulging sphere that flattened slightly at the poles. That is the only shape that can mathematically fit the data. So yes, a spinning sphere. The spinning is what causes the bulge.
What is an "oblate spheriod" and how can you prove it mathematically?
Could you please show us.
You have managed to type a lot without really saying anything!
My apologies. I might have been a bit testy because I'm having a bad day. I have described the test several times previously on this board, and I worry people might grow tired of hearing it. I ask your forgiveness. Create a direct, round trip path between any 3 points on the earth, forming a triangle. Make sure the points are at least 2000 nautical miles to get sufficient resolution. Add the interior angles of the triangle formed. It will add to more than 180 degrees. That proves the surface you have just covered is positively curved. And because this works with any 3 arbitrary points on the earth, this conclusively shows the earth can only be an ellipsoid of some kind. There is no mathematical possibility flat earth is a correct hypothesis. It does not require trust in anyone or any organization.
I never said it was flat, you are using a lot of language to say it is not a spinning globe or sphere though.
So what is it, can you tell me in the most basic English?
The technical term is "oblate spheroid". Which means a bulging sphere that flattened slightly at the poles. That is the only shape that can mathematically fit the data. So yes, a spinning sphere. The spinning is what causes the bulge.
Interesting photos when you look up images of "spheroids".
How fast is it spinning?
Do you think the north pole could be right in the middle of it, on top?
And the south pole is on the bottom in the middle?
Is the spheroid horizontal or vertical?