I want to know how can I get the flattening factor for a ellipse by knowing its semi-major and semi-minor axes ?
Actually I tried this formula:
While $f$ is the flattening factor, $a is the semi\,major\,axes$, $b is the semi\,minor\,axes$. I think it's true because when I try it with circle it gives me $\left(\,f=0.0\,0\right)$. but I don't have any source for this formula and I'm not sure if it's true !
So if any one know what is the exact formula for finding the flattening factor for a ellipse ?