These Pretty Vortices

Mick West

Administrator
Staff member
Somewhat a semantic clarification, but the large helix shape is not really a vortex, the actual vortices are very thin (tip vortices), and essentially in the white lines. These are photos of propellor tip vortices tracing quadruple helixes in a moving air mass.

The tip vortices are the pink rope-like lines here:
https://www.nas.nasa.gov/SC12/gallery.html

 
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