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Re: Electronic balances was A weighty subject



At 22:00 10/13/99 -0400, Bob wrote:
...You may want to change the labels on the "standard weights" when
you get to the moon; how to do this would involve comparing the weights
of the same object on the earth and on the moon - but this is an entirely
different kind of measurement - how would you do it? ...
Bob Sciamanda

Michael Edmiston actually described a species of self calibrating
electronic scale which measures force as always, but offers a better
proxy for mass than the usual electronic scale by initializing to zero,
and then applying a known weight which it will then autocalibrate to
indicate as a particular mass.

Although such scales may not be very common, and although they
might well lack the range of sensitivity to recalibrate well on the
Moon, there is no conceptual difficulty with such a design - it is
easily and relatively cheaply produced.





brian whatcott <inet@intellisys.net>
Altus OK