Olin Lathrop wrote: > Planes already fly by "using the air". As the plane passes thru some air= , > it pushes it down, which in turn pushes the plane up to counter gravity. So you're in the Newton camp? :) I'd love to hear you debate my Bernoulli= =20 friend. Vitaliy=20 --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .