(the title was to catch your attention)
Hello, Flat Earthers and Round Earthers alike!
The topic of this thread is the rotation of the Earth. As an expressed Round Earther, I believe not only that the Earth is round, but rotates about a North South axis.
Do flat Earthers believe that the earth rotates at all?
If so, at what angular speed?
According to calculations by Leon Foucault, a foucault pendulum should have an angular rotation of
360 sin (latitude)I think that simple experiments with a foucault pendulum show that the Earth does indeed rotate.
I can think of two scenarios of a flat Earth
1. The flat earth does not rotate.
If so, any foucault pendulum's plane of swing would not move.
2. The flat earth indeed rotates about the north pole.
If so, the foucault pendulum would indeed exhibit angular rotation.
However, because the Earth is a "disk", not only would the rotation occur at the equator (whereas in the spherical Earth it would not), but would behave in a way that agrees with the disk model of the Earth, with a varying rate of rotation depending on the position of the pendulum with respect to the direction of your movement.
In the spherical Earth model, equivalent distances north or south of the Equator exhibit equivalent rates of rotation (with the southern hemisphere causing the pendulum to rotate in the opposite direction).
Indeed, with experiments having been done since 1851, results have been solid at pointing toward a rotating, spherical Earth.
For those of you who travel, I urge you to build a pendulum and calculate the rate of rotation of the pendulum, and compare it to a pendulum back at home. Hint: On a spherical Earth, the north pole and south pole should exhibit a single rotation per day, with that rate slowing down the closer to the equator you are.
I am eager to read your responses.
http://en.wikipedia.org/wiki/Foucault_pendulum