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RE: ATM mercury flats

To: atm@shore.net
Subject: RE: ATM mercury flats
From: Ken Launie <launiek@cliffy.polaroid.com>
Date: Fri, 02 May 1997 16:22:57 -0700
Organization: Polaroid Corporation
Reply-To: Ken Launie <launiek@cliffy.polaroid.com>
Sender: owner-atm@shore.net

If you think of the earth's gravity as essentially acting at a point at
the center (a reasonable approximation, I think), then the mercury 
surface will have a radius of ~3500 miles.  The sag over 10 inches, say,
is < 1/300 of a wave (assuming my quick math is OK). 

Ken Launie

Lawrence D. Lopez wrote:
> Does anyone have a handle on the effect of the earth's gravity on the figure of a 
>mercury flat?

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