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Does Earth's magnetic field affect any datum definition?

I had an interview last week. One very interesting question was "does earth's magnetic field affect any datum definition?" I was sure it does not for geocentric datums. But I thought maybe the ...

datum theory

asked Jul 10 '12 at 12:44

thelastray
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What's the difference between a projection and a datum?

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Does Earth's magnetic field affect any datum definition?

What's the difference between a projection and a datum?

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