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...number is equal to f A/U" Jonathan Corum (a graphic designer), has put forth an article on the graphic representation of birds in flight using Strouhal numbers (http://www.style.org/strouhalflight/). This is based upon some recently published research in Nature: Graham K. Taylor, Robert L. Nudds, Adrian L. R. Thomas Flying and swimming animals cruise at a Strouhal number tuned for high power efficiency Nature 425, 707?711 (October 16, 2003) http://www.nature.com/cgi-taf/DynaPage.taf?file=/nature/journal/v425/n6959/abs/nature02000_fs.html Perhaps more importantly, Corum has attempted to...