Impossible Helicopter Illusion - Video

Maniac World


     

Impossible Helicopter Illusion

From the video:  The propeller of this Russian helicopter is really rotating.  A radio wave signal is coupling the shot time of the movie camera with the rotation of the rotor to synchronize them.  This allows to visualize efforts and deformations on the blades. 

More optical illusions here.

Impossible Helicopter Illusion

Maniac World