File:Dust Devils.jpg
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Original file (2,901 × 2,736 pixels, file size: 3.34 MB, MIME type: image/jpeg)
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DescriptionDust Devils.jpg | Dust devils form when extremely hot air near the surface rises quickly through a small pocket of cooler low pressure air above it. If conditions are just right, the air may begin to rotate. As more hot air rushes in toward the developing vortex to replace the air that is rising, the spinning effect becomes further intensified and self-sustaining. A dust devil, fully formed, is a funnel-like chimney through which hot air moves both upwardly and circularly. Eventually the hot air will cool and descend back through the center of the vortex. This cool air returning acts as a balance against the spinning hot air outer wall and keeps the system stable. (from <a href="http://en.wikipedia.org/wiki/Dust_devils">wikipedia</a>) | ||
Date | |||
Source | originally posted to Flickr as Dust Devils Dance | ||
Author | Steve Jurvetson | ||
Permission (Reusing this file) |
This file is licensed under the Creative Commons Attribution 2.0 Generic license.
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 11:59, 24 September 2009 | 2,901 × 2,736 (3.34 MB) | Flickr upload bot (talk | contribs) | Uploaded from http://flickr.com/photo/44124348109@N01/888064641 using Flickr upload bot |
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This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Camera manufacturer | Canon |
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Camera model | Canon EOS 5D |
Exposure time | 1/4,000 sec (0.00025) |
F-number | f/8 |
ISO speed rating | 800 |
Date and time of data generation | 14:15, 21 July 2007 |
Lens focal length | 400 mm |
Orientation | Normal |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | QuickTime 7.2 |
File change date and time | 11:14, 24 July 2007 |
Y and C positioning | Centered |
Exposure Program | Shutter priority |
Exif version | 2.2 |
Date and time of digitizing | 14:15, 21 July 2007 |
APEX shutter speed | 12 |
APEX aperture | 6 |
APEX exposure bias | 0.33333333333333 |
Metering mode | Unknown |
Flash | Flash did not fire, compulsory flash suppression |
Color space | sRGB |