All you need is the information from the OP in these threads. But be warned, your family members that do not want to accept a motionless plane earth are really going to be pissed when you hit them with a little dose of reality from the threads, especially the Hudson Bay thread.
If his goal is to look like a complete moron, then yes, that is all he needs.
If he wants to look intelligent, it would be wise for him to go through those threads and see how you got your ass handed to you repeatedly after spouting such ignorant nonsense.
That "little dose of reality" in those threads is that Earth is round and that you have no rational defense of your claims that Earth is flat or a rational refutation of Earth being round.
You can't even follow the request of the OP in this thread!
That is because we realise Earth is round, and dislike people spoutng ignorant crap unchallenged.
However, we did address the OP, indicating ships and other objects disappearing below the horizon is evidence that Earth is round.
I notice you didn't bother with that and instead just bring up other, already refuted crap.
None of you, and I mean none of you, could offer any physical evidence/clues/signs from earth's physical state the earth is a spinning speeding ball.
We provided plenty, both from Earth directly, and otherwise.
You could offer nothing to refute it nor could you offer a single thing to support Earth being a flat motionless plane.
Every piece of "evidence" you provided was completley consistent with Earth being a spinning speeding ball.
All you had were assumptions, assertions and ugly insults. Newhavener can read through the threads to discover your lies, don't worry. But we all know you need to try and poison the well first, right?
There you go projecting again.
Here is Lake Victoria on the equator in Africa. Spherical earth die-hards claim, because of earth's spin, the water on earth bulges out to make the marble globe shape
This lie has already been pointed out repeatedly. Why do you keep claiming it?
It is gravity which is the predominate force responsible for the globe shape.
The spinning just produces a slight bulge.
but we see water, where that bulge is supposed to be the greatest, is non-existent.
Prove it.
All you have is an inability to detect it. It isn't suprising considering you are looking for a fairly small bulge, and looking at a tiny part of Earth.
There are only 2 ways to have a shot of seeing this bulge, one is directly, by observing Earth from far enough away to be able to get an almost side on view where you can observe the polar radius and equatorial radius. Then you will need a guide as you cannot tell that much is not a circle just by looking at it.
The other option is to accurately measure the curvature of Earth.
As you can see Newhavener, the water at the equator falls to a lower point on earth, and is horizontally level across its surface.
Yes, it is level, according to the apparent gravitational potential, but it doesn't fall to the lowest point.
The lowest point would be at the poles. The water level at the poles (ignoring the ice and land in case of Antarctica) is 21.3 km below the equator.
So if what you were saying was true, the water at the equator would be rushing to the poles, and some places near the pole would be completely underwater.
But this isn't the case.
Instead the centrifugal forces keep the water near the equator, such that it is level with the apparent gravitational potential, rather than the lowest point.
Water cannot be obeying centrifugal forces, being pulled out to make a convex curve, and also be falling to a lower place on earth, it's impossible. I have asked the SE die-hards to provide evidence from a body of water in an earthly container that is obeying both forces at the same time, this is what I've got so far
You have gotten plenty of examples of water (or other bodies) obeying both gravity (or some other force) as well as centrifugal forces at the same time. You even provided some yourself.
The water doesn't fall to the lowest point. It tries to level itself off based upont the apparent gravitational potential which takes the centrifugal forces into account.
You are yet to demonstrate that the water at Lake Victoria is not doing this.
The Bonneville salt flats:
The Bonneville salt flats have a level flat surface horizontal to motionless plane earth, and is perfect for high speeds, as there is no upward slope, curvature, bow on the surface to contend with.
No. They have a level surface. Not a flat one.
There is a curve, but because it is at the same apparent gravitational potential, no energy is needed to climb uphill.
Thus proving, Newhavener, water does not arch, bow, curve across its surface once it fills a void. We should expect no different with the ocean water, after all, oceans are just huge lakes.
Except you are yet to demonstrate any of that is actually flat.
This is what ships on the ocean are navigating:
No. It isn't.
Ships on the Ocean are not navigating a tiny lake.
Thanks for once again showing your ignorance of spherical geometry.
If you wish to scale it you need to scale Earth as well.