Cause behind the characteristic shape of a long leaf revealed
Wednesday, November 25, 2009 - 23:14
in Physics & Chemistry
Applied mathematicians dissected the morphology of the plantain lily, a characteristic long leaf with a saddle-like arc midsection and closely packed ripples along the edges. The simple cause of the lily's fan-like shape -- elastic relaxation resulting from bending during differential growth -- was revealed by using an equally simple technique, stretching foam ribbons.