Usually you can see this kind of pattern painted on jet engines. The rumor says that it’s supposed to make birds nervous and make them avoid getting transformed into bird soup. Don’t know it that is truly the case, still there is definitely something hypnotic in the way this spinner is painted.
![Hypnotic propeller](http://www.korwelphotography.com/wp-content/uploads/2010/11/MG_50331.jpg)