Dave Tweed wrote:
>
> Brandon Fosdick <bfoz@TERRANDEV.COM> wrote:
> > IIRC correctly the geoid is a sphere with a radius equal to sea level at
> > the equator and centered at Earth's center of gravity. Which obviously
> > makes it above ground at the equator by a few (2?) kilometers. It should
> > be a few tens to hundreds of meters above ground level in NY I think.
>
> No, the geoid is not a sphere. See question 4 and its answer in this quiz:
>    http://www.circuitcellar.com/library/eq/152/index.htm

Well, like I said, IIRC, which apparently I didn't. I seem to remember
some surface with the properties I mentioned but geoid is the only name
I could think of for it. Getting old I guess.

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