NOV 22, 2018 05:14 PM PST

Why Are Dandelion Seeds So Good at "Flying"?

The seeds of dandelions, pesky and irritating as they are, bear an extraordinary aerodynamic property that allows them to be carried far by the wind. In contrast, the seeds of maple trees, despite having wing-like structure, don't just float away in the air or get dispersed widely.

Unlike flying objects with wings, which relies on the pressure differential between the top and bottom side of the wing to sustain flight, the bristles on dandelion seeds form a little parachute and are believed to be the key to their wind dispersal nature.

Using a new technique, a group of researchers at the University of Edinburgh unraveled the secret behind the seeds' flying ability. They placed the seeds in an upward wind tunnel and used a laser beam to visualize the airflow around them. They discovered separate stable vortices above the seeds, which were thought impossible previously. The number of bristles per seed and how they are arranged appeared to underpin the unique aerodynamic of dandelion seeds, as researchers concluded.

Source: Nature Video via Youtube

About the Author
  • With years of experience in biomedical R & D, Daniel is also very into writing. He is constantly fascinated by what's happening in the world of science. He hopes to capture the public's interest and promote scientific literacy with his trending news articles.
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