[time-nuts] gravity controlled pendulumn clock?

[Azelio Boriani]

OK, you are referring to the gravitational field just inside the mass as
near field. I was thinking about something like the near EM field.

On Tue, Dec 13, 2011 at 12:46 AM, <bg at lysator.liu.se> wrote:

> > Folks,
> >
> >      Actually, the USGS goes around measuring the local gravitational
> > constant in various places.  There was a gravimeter set up in the
> > basement of one of the local universities a few years back doing just
> > that.  And some time ago, the U.S. spent a fair amount of time, money
> > and effort (presumably as did the Soviet Union and others) mapping
> > the Earth's external gravitational field to correct for its effect on
> > ballistic missile trajectory.  Probably still do.
> >
> >              Francis
>
> Your intertial naviation systems accelerometers will always sense gravity.
> The INS computations will need to substract the local gravity vector
> before integrating acceleration to velocity and then position. This
> becomes very critical for high accuracy applications where GPS is either
> not available (submarines) or ICBMs which should work even with GPS
> knocked down.
>
> This is a reason to map gravity anomalies.
>
> --
>
>    Björn
>
>
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