"Bugs" wrote in message
ups.com...
Sine curves don't faintly resemble the conic projections, ellipse and
parabola except that they are all curves, which includes an infinite
family of exponentials, logarithmic, etc. etc.

Except that ellipses have curves with more than 1 radius similar to
sections of a sine wave.


Since wine bottles are basically cylinders, the family of conic
projections will fit them precisely.

Which is why I indicated an arc will fit more closely fit or follow the
shape of a bottle than an ellipse. An arc is a section of a circle. An
ellipse is a circle illustrated in isometric or 3d format.