I have a fair bit of scientific training and have a compulsion where I enjoy trying to convince other people science is right just like I was convinced. However, I can't really throw formulas at you, because you simply reject their premise. You do, however, seem to employ some "scientific" thought so I will attack from that angle. Yes, I've read the FAQ. No, I don't enjoy confrontation, I enjoy friendly arguing.
First, I must ask, why do you all have a problem with the concept of a round earth? The physics that dictate it do a very good job of explaining a lot of things and make extremely accurate predictions. Your FAQ makes no predictions at all and only addresses a barrage of questions by attempting to explain them away in a semi-rigorous manner. The only advantage of your postulate is that is conforms with what we see with our eye, that is, the earth is flat.
But that cannot be the basis of your reasoning. You cannot simply reject a theory because you can't see it. If so, you would be forced to reject medicine as a conspiracy of the pharmaceuticals because you can't see it work. You would reject the concept of atom because how could an electron, which is attracted to a proton, orbit without simply falling in? I'm curious if any of you reject a larger portion of science for your beliefs.
Finally, I reject the experiment made by Samuel Rowbotham. I say experiment because they are all same (save for the ridiculous one which compares the curvature of the earth with the flatness of water). The argument is, when you look out very far with a telescope, you don't see the earth curve, therefore it doesn't, at all. It is very easy to measure the drop in the earth due to curvature at the relatively
short distances described in his book.
Simply take the ratio of the distance involved and the circumference of the earth:
5/78225
The drop in the height is 24900-24900cos(2*pi*5/78225)=-0.002 miles according to my calculator
Not surprisingly, this is incredibly small, about 10.5 feet, well within the errors induced by topography. You would not be able to discern the difference.
I'll end with this. A highschool (maybe middleschool) class sent a camera into near-space with a weather balloon. You can see the photos here:
http://i.gizmodo.com/5173755/teens-capture-amazing-shots-20-miles-from-earths-surface-with-a-balloonMy point isn't to say the photos provide proof (because of the conspiracy), but it is an experiment that you could easily replicate. Why don't you?