marius schebella schrieb: > Mathieu Bouchard wrote: > >> this is actually cos^2+sin^2=1 in this context, > > these are not unity vextors, if you square the cosine and sine part you > don't get one, but a square of the amplitudes, so it is more > cos^2+sin^2=amplitude^2 hm, I don't really understand what you try to say here, but cos(x)^2 + sin(x)^2 is 1 ! LG Georg