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originally posted by: Dem0nc1eaner
originally posted by: Toolman18
Just put a basketball about 20 feet in the air and try to observe the same face of it when you walk a circle around it.
No, in particular since the two behave quite differently. While the idea that the four forces can somehow be united has been around for a while, no one has managed to come up with a way to demonstrate it.
Arent we slowly changing to the view that 'gravity' is more a function of electromagnetism ?
The shape of the world was known. What Eratosthenes did was calculate its circumference by measuring the angle of sunlight at two locations. Simply. Elegantly.
BTW: Didnt Eratoshenes show the earths shape by his holes in the ground experiment