On 26/01/2011 23:00, N. T. wrote: > Olin Lathrop wrote: >> I'm not sure what you're overall point is. You seem to be trying to >> describe how the lift forces on the wing are generated, but how ever the= y >> are generated it doesn't change the fact that ultimately a plane stays u= p by >> pushing down on air. > I think he is trying to state that a plane hangs on by pulling the air > down, not "stays up", by "pushing down on air". Probably you should > have used "moving air down", not "pushing air down". But that's > absolutely not important in the context as for me. > I think we are beginning to split hairs here - if one thing goes one=20 way, then something generally goes the other way too. Out of interest -=20 what do you see is the distinction between "pushing air down" and=20 "moving air down"? --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .