The rotation can be directly observed with a Foucault Pendulum.
This question has been asked in three topics now, and I'll make it four.
Why does Foucault's Pendulum swing in opposite directions north and south of the equator?
Round Earth has a very reasonable theory for that: from a perspective with the South Pole at the top, the Earth is spinning clockwise. From a perspective with the North Pole at the top, the Earth is spinning counter-clockwise. Therefore, the North and South pendulums would spin in different directions because from the perspective of the pendulums, the Earth
is spinning in different directions.
However, in the Flat Earth model, the Earth is spinning in only one direction (counterclockwise). Why does the directionality of the rotation of the pendulum change?
And if it doesn't, why hasn't this been observed? Surely the many thousand scientists in the southern hemisphere wouldn't just say, "Hey! This is rotating clockwise instead of counter! Let's ignore that fact and never post it anywhere!"
Or are they
all in on the conspiracy?