I am not interested in looking at doctored photos from NASA.

All that matters to me is real math, and real science.

Mathematic equations from 240 BC that are now invalid and fruitless expeditions from 1735 do not sway me.

Not only has my question been unanswered, but you seem to have disregarded my last post.

Exactly why can no one show me an equation proving Earth to be an oblate spheroid, after all a child can do it.

Oh... wait, maybe the reason is because it is flat!

You wonder that no can one show you "an equation proving Earth to be an oblate spheroid".

Well "proving Earth to be an oblate spheroid" is not a mathematical problem, but a measurement problem.

You can't prove that some object is a cube with some equation, what you have to do is measure the object and demonstrate that all sides are equal and all faces are squares.

Likewise with the earth Newton did postulate that the earth should have a larger equatorial radius than polar rsdius, and many mathematicians have calculated what that difference should be.

But the real figures have be determined by measurement.

Those so-called "fruitless expeditions from 1735" that did not "sway you" were just part of many measurements of the length of one degree of latitude at various latitudes.

So yes, you can calculate the

*theoretical* "figure of the earth", but it needs to be

**measured** to determine the actual value.

If you really are interested you read

**Wikipedia, History of geodesy** or

**GG612 Lecture 3: EARTH’S FIGURE, GRAVITY, AND GEOID**, mind you there some sums!

Of course, if you read my earlier posts you will have noted that the earth is not even a perfect ellipsoid (oblate spheroid).

It is only very accurate

**measurements** that can determine this sort thing.

**Now, maybe you would be good enough to give us you simple mathematical proof that the earth is flat.**