Dear Bernhard,
I did some google searching and found
http://www.realtimerendering.com/int/
which gives references to various texts for all kinds
of intersections.
Frances Bernstein
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On Wed, 19 Mar 2008, Bernhard Rupp wrote:
> Dear All -
>
> if memory serves me right, the intersection curve of
> a cone with a cylinder (like in a powder diffraction camera) is
> not an ellipse, but a "Schnittfigur zweiter Ordnung",
> loosly translated as 'intersection curve of second order'.
>
> Is there a correct English term for that type of curve?
>
> Thx, br
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