tisdag 2 september 2014

Insekter och paddlar


Intressant hur lika små insekters vingslag är vingpaddel-rörelsen. Tittar man på formen på bilden  nedan är det förståeligt.

"Small insects paddle through air just as a kayaker uses a paddle to push his or her kayak through the water, small insects use their wings to push themselves through the air, using the force of drag. Unlike birds who use the force of lift to fly through the air, insects swim through the air, pushing it behind them like a fish pushes aside water."





Inga kommentarer:

Skicka en kommentar