Re: "Is There a Force of Gravity?"


N:dlzc D:aol T:com (dlzc) wrote:

Astronauts feel no "gravitational" or "tidal" forces in the ISS.
Float a pen in front of one of these astronauts... and it only
drifts where the air circulation system takes it.

I believe that the shuttle now contains a gravity gradiometer which can
measure tidal forces (See Ohanian's "Gravitation and Spacetime - Second
Ed." page 51).

You can't see "tidal forces". That which produces tides does not
act locally, but is evident when spread over a "large" system.

Since when did tidal forces not become measurable. A friend of mine is
an astrophysicist and tells me that satellites need to be readjusted
spatially every so often to compensate for today forces twisting it out
of position.

Best wishes

Pete

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