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    Alley-side Pickup: 10am - 7pm

    3038 Hennepin Ave Minneapolis, MN
    612-822-4611

Open Daily: 10am - 10pm | Alley-side Pickup: 10am - 7pm
3038 Hennepin Ave Minneapolis, MN
612-822-4611
Minimization of Motion Smear: Reducing Avian Collision with Wind Turbines

Minimization of Motion Smear: Reducing Avian Collision with Wind Turbines

National Renewable Energy Laboratory (Nr

Paperback

General Political Science

ISBN10: 1249134072
ISBN13: 9781249134077
Publisher: Bibliogov
Published: Jul 20 2012
Pages: 46
Weight: 0.22
Height: 0.10 Width: 7.44 Depth: 9.69
Language: English
Collisions with wind turbines can be a problem for many species of birds. Of particular concern are collisions by eagles and other protected species. This research study used the laboratory methods of physiological optics, animal psychophysics, and retinal electrophysiology to analyze the causes of collisions and to evaluate visual deterrents based on the results of this analysis. Bird collisions with the seemingly slow-moving turbines seem paradoxical given the superb vision that most birds, especially raptors, possess. However, our optical analysis indicated that as the eye approaches the rotating blades, the retinal image of the blade (which is the information that is transmitted to the animal's brain) increases in velocity until it is moving so fast that the retina cannot keep up with it. At this point, the retinal image becomes a transparent blur that the bird probably interprets as a safe area to fly through, with disastrous consequences. This phenomenon is called motion smear or motion blur.

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