During my time studying at the Library of Alexandra, I had many opportunities to correspond with other great thinkers. During that time I noticed something about shadows. One of my colleagues from the city of Syene in southern Egypt, noted that on the Summer
Solstice the sun was directly overhead, and that vertical objects cast no shadow. Now with that established, get a consensus on the distance from the earth to the sun. Its about 149,600,000 km by my calculations.
Any debate on the stated facts to this point?
With a little bit of reading on our wiki, you would have discovered the Electromagnetic Accelerator (EA for short, sometimes referred to as "bendy light" by detractors, and some believers have adopted the term as well, for humor's sake). This is a force that, along with the Universal Acceleration that gives rise to the force of gravity as we feel it, bends light upward as the source of light moves farther away from the observer.
In the case of the sun's light, this effect accounts for Eratosthenes' observations.
It also, incidentally accounts for the sinking ship effect, as light rays that begin parallel to Earth first seem to "fall" as the earth moves upward, and then bend upward much like the sun's rays in the effects of EA.
For example:
The wiki at this site is still being fleshed out by our Zetetic Council but I'm fairly certain the EA is discussed there.