Wednesday, 20 Jan 2021 11:51 AM MYT
This handout picture taken in June 2018 released on January 19, 2021 by the Lund University shows a Silver-washed fritillary butterfly close to the Lund University field station Stensoffa, outside Lund, in Southern Sweden. — AFP pic
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PARIS, Jan 20 — The whimsical, wafting flight of butterflies may not give the impression of top aerodynamic performance, but research published yesterday suggests their large flexible wings could be perfectly designed to give them a burst of jet propulsion.
Scientists at Lund University in Sweden set out to verify a decades-old theory that insects “clap” their wings together, squeezing out the air between with such force that it thrusts them forward.