But, isn't that just
z < 5 or z > -5
?
On Thu, Feb 19, 2015 at 10:44 AM, Angel Herráez <angel.herr...@uah.es>
wrote:
> > select x > -5 or x < 5
> >
> > right?
> >
> > Or was that just an illustration?
>
> It was, I think
> Since in Eric's model the tunnel is centered on the Z axis, y was
> suggesting to use distance to the axis, not to the origin, and hence
> x**2 + y**2 < d**2
>
>
>
>
>
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--
Robert M. Hanson
Larson-Anderson Professor of Chemistry
Chair, Department of Chemistry
St. Olaf College
Northfield, MN
http://www.stolaf.edu/people/hansonr
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-- Josiah Willard Gibbs, Lecture XXX, Monday, February 5, 1900
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