[geeks] New Horizons

[Sandwich Maker]

" From: Sridhar Ayengar <ploopster at gmail.com>
" 
" Sandwich Maker wrote:
" > 
" > am i right in guessing that the surfaces on real aspheric lenses are
" > -conic-sections- [in rotation]?
" 
" Even a sphere is a rotated conic section.

i know that!  it's a subset - or special case - of all possible conic
sections.
________________________________________________________________________
Andrew Hay                                  the genius nature
internet rambler                            is to see what all have seen
adh at an.bradford.ma.us                       and think what none thought