I initially posted this basis question in
http://www.theflatearthsociety.org/forum/index.php?topic=65265.msg1746721#msg1746721 and received no sensible reply, just silly answers.
So I tried again with
http://www.theflatearthsociety.org/forum/index.php?topic=65265.msg1747140#msg1747140, only jroa with inane responses!
So, I will try again:
From the little I have read Einstein's "Equivalence Theory" can only be applied over a
region of space and time where "g" is constant. Here g is taken to be the net acceleration we feel as a result of gravity and other effects.
This is clearly not true for the whole surface area of the earth.
We find that at sea level g varies from about 9.780 m/s
2 at the Equator to to about 9.832 m/s
2 at the poles - only about 0.5%, but quite measurable.
Also an increase in altitude from sea level to 9,000 metres (30,000 ft) causes a weight decrease of about 0.29%, neglecting any change in buoyancy of the less dense atmosphere. (Admittedly from
https://en.wikipedia.org/wiki/Gravity_of_Earth#Latitude, but the I don't believe the figures are much disputed).
So if the UA theory is going to rely on the "Equivalence Theory" for justification, some rational explanation for these variations must be provided. This explanation should show why changes in "g" are detected as a result of massive ore bodies - used in mineral exploration.
And, please don't come up with the "gravitational effects of the sun moon and other celestial bodies" for obvious reasons!
I just get answers like:
Have you never heard of variations in readings of test equipment? Are you tolling, or are you really this dumb?
My reply was:
Why on earth would exploration companies spend millions on gravimetric surveys with instrument showing sufficient "variations in readings of test equipment" to render that readings unreliable.
And, if
"variations in readings of test equipment" is the cause of the variation of "g" with latitude and altitude, why are the readings consistent?My whole point has been that, UA should never have been applied to a region where the gravitational field is not constant, unless there is sound reasoning explaining these anomalies.If there are no sensible responses (other than from Skeptimatic or JRoweSkeptic, who I doubt go with UA anyway) I can just assume that the UA should NEVER have been applied, and the FE had better find anoyther explanation for "gravity".