On Mar 9, 10:02*pm, Brad wrote:
Well, how would you suggest we deal with the fact that a 1000 meter
gain measured by the GPS may physically place the glider either higher
or lower than a 1000 meter gain measured by a pressure altimeter on
the same day? *We traditionally measured height and gain by using
pressure differentials mapped to an abstract model of the atmosphere,
allowing both methods of measurement requires some sort of
compromise...

Marc

Marc, It was a tongue in cheek comment...........sorry.........


You, I, and others may know that, but not everyone is in on the joke.
You really want to risk starting another 200 message thread? ;^)

Marc