Quote:
Originally Posted by Mondo Bungle
ie a cylinder
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Heavens no! We can be sure that the diameter of the disk is still much larger than the thickness* - yet, still, by human standards, it's quite thick.
*Naturally, the eletromagnetic field appears to interact with the earth in a way that suggests its a sphere, but if you consider the edging effects of the magnetic field of a disk (particularly when the diameter is much larger than the thickness) it's approximately the same result.