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lifted by a swish
The bumblebee is a four-winged insect. Its wings swivel and flap.
The bumblebee is a four-winged insect. Its wings swivel and flap, knocking into each other which produces a buzzing sound.
Despite the small area of its wings, the [[vortice]]s produced when the wings collide provide additional lift. [http://www.geek.com/news/geeknews/2004Mar/gee20040405024594.htm]
According to a persistent urban legend, the laws of physics supposedly say that "bumblebees can't fly". This stems a rough calculation based on the assumption that their wings are fixed like that of an airplane. <ref> [http://www.sciencenews.org/articles/20040911/mathtrek.asp Flight of the Bumblebee] - Ivars Peterson </ref>
According to a persistent urban legend, the laws of physics supposedly say that "bumblebees can't fly". This stems a rough calculation based on the assumption that their wings are fixed like that of an airplane. <ref> [http://www.sciencenews.org/articles/20040911/mathtrek.asp Flight of the Bumblebee] - Ivars Peterson </ref>