File:Hummingbird wake Pengo.svg

Original file (SVG file, nominally 680 × 975 pixels, file size: 32 KB)

This file is from Wikimedia Commons and may be used by other projects. The description on its file description page there is shown below.

Summary

DescriptionHummingbird wake Pengo.svg	English: A trail of wake vortices generated by a hummingbird's flight. Discovered after training a bird to fly through a cloud of neutrally buoyant helium-filled soap bubbles and recording airflows in the wake with stereo photography. Ref: Rayner, J.M.V. 1995. Dynamics of vortex wakes of flying and swimming vertebrates. J. Exp. Biol. 49:131-155.
Source	Based on diagram seen in: Analysis of Vertebrate Structure, 5th Ed. (textbook) Milton Hildebrand, George Goslow. 2001. Figure 28.15. p537. Torus created in Art of Illusion and re-vectorised in Inkscape (via PoTrace). This W3C-unspecified vector image was created with Inkscape .
Author	Peter Halasz (Pengo at English Wikipedia=
Permission (Reusing this file)	Licensing Illustration credit: Peter Halasz. (User:Pengo) I, the copyright holder of this work, hereby publish it under the following licenses: This file is licensed under the Creative Commons Attribution-Share Alike 2.5 Generic license. You are free: to share – to copy, distribute and transmit the work to remix – to adapt the work Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original. CC BY-SA 2.5 truetrue This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. You are free: to share – to copy, distribute and transmit the work to remix – to adapt the work Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original. CC BY-SA 3.0 truetrue You may select the license of your choice. For the Creative Commons license, please give attribution to: Peter Halasz and/or, link to this image page: `http://commons.wikimedia.org/wiki/File:Hummingbird_wake_Pengo.svg` Although not a requirement of the license, if you use this image in print or media other than the web, I would appreciate it if you let me know. Please contact me if you require alternate licensing.