Image:Natural History Museum a rock.jpg
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[edit] Summary
I took this picture on 2006-04-15 in the Smithsonian National Natural History Museum in Washington, D.C. This rock is one of the oldest bits of evidence of the first life (about 3.5 to 3.8 billion years ago). The hollowed-out dome-like cavity is apparently a signature of life.
[edit] Licensing
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I, the creator of this work, hereby grant the permission to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. Subject to disclaimers. |
File history
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| Date/Time | Dimensions | User | Comment | |
|---|---|---|---|---|
| current | 07:20, 22 April 2006 | 2,580×1,932 (911 KB) | Cyde (Talk | contribs) | (I took this picture on 2006-04-15 in the Smithsonian National Natural History Museum in Washington, D.C. This rock is one of the oldest bits of evidence of the first life (about 3.5 to 3.8 billion years ago). The hollowed-out dome-like cavity is app) |
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Metadata
This file contains additional information, probably added from the digital camera or scanner used to create or digitize it. If the file has been modified from its original state, some details may not fully reflect the modified file.
| Camera manufacturer | EASTMAN KODAK COMPANY |
|---|---|
| Camera model | KODAK DX4530 ZOOM DIGITAL CAMERA |
| Exposure time | 1/2 sec (0.5) |
| F-number | f/2.8 |
| Date and time of data generation | 14:27, 15 April 2006 |
| Lens focal length | 8 mm |
| Orientation | Normal |
| Horizontal resolution | 230 dpi |
| Vertical resolution | 230 dpi |
| Y and C positioning | 1 |
| Exposure Program | Normal program |
| Exif version | 2.2 |
| Date and time of digitizing | 14:27, 15 April 2006 |
| Shutter speed | 1 |
| Aperture | 3 |
| Exposure bias | 2 |
| Maximum land aperture | 3 |
| Metering mode | Pattern |
| Light source | Unknown |
| Flash | 16 |
| Color space | sRGB |
| Exposure index | 200 |
| Sensing method | One-chip color area sensor |
| Custom image processing | Normal process |
| Exposure mode | Auto exposure |
| White balance | Auto white balance |
| Digital zoom ratio | 0 |
| Focal length in 35 mm film | 38 |
| Scene capture type | Standard |
| Contrast | Normal |
| Saturation | Normal |
| Sharpness | Normal |
| Subject distance range | Unknown |
