Quote:
Originally Posted by Archy
The Earth is massive enough to curve space-time: if it were not, there would be no gravity.
Since we do experience gravity, my first statement "We all live in curved space so we don't notice it" has to be modified to:
We all live in curved space time and experience it as gravity.
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Ever heard of Einstein's principle of equivalence on which GR is founded? Evidently not.
We experience gravity in the gravitational field.
We can also experience the same gravity by being accelerated at g in a gravity free field. A gravity free field is flat space.
Hence we can experience gravity in flat space which contradicts your post.
It is how curved space time acts on bodies and light that would otherwise be
travelling in a straight line in flat space that reveals it's presence.
As mentioned in a previous thread the perhelion advance of a planet is one way. The advance of the moons orbit is explained by classical means (ie tides) and is not due to space time curving.
The Earth's field is not strong enough for the effects of space time curving
to be observed.
The moons orbit is satisfactorily explained by Newtonian physics.
They are the facts!
On a final note this is my last response to your posts. It's quite obvious where this thread is heading.