File:AEC Top Secret Cover Sheet (6520387149).jpg
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Original file (800 × 1,056 pixels, file size: 403 KB, MIME type: image/jpeg)
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Summary
DescriptionAEC Top Secret Cover Sheet (6520387149).jpg | A "Top Secret" cover sheet from the US Atomic Energy Commission. This particular form dates from 1949, and was used through at least the early 1950s. This specimen comes from the papers of the Joint Committee on Atomic Energy, in the Legislative Archives, U.S. National Archives, and was attached to a document from 1953. |
Date | |
Source | AEC Top Secret Cover Sheet |
Author | RestrictedData from Washington, DC |
Licensing
This file is licensed under the Creative Commons Attribution 2.0 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.
This image was originally posted to Flickr by RestrictedData at https://flickr.com/photos/69537337@N02/6520387149. It was reviewed on 5 September 2015 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0. |
5 September 2015
Items portrayed in this file
depicts
some value
17 June 2009
image/jpeg
d50c4a8a01d22a319a5cfaaa752ea49a081326de
412,746 byte
1,056 pixel
800 pixel
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 13:36, 5 September 2015 | 800 × 1,056 (403 KB) | Glunggenbauer | Transferred from Flickr via Flickr2Commons |
File usage
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Metadata
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If the file has been modified from its original state, some details may not fully reflect the modified file.
Camera manufacturer | Canon |
---|---|
Camera model | Canon PowerShot SD450 |
Exposure time | 1/80 sec (0.0125) |
F Number | f/2.8 |
Date and time of data generation | 04:35, 17 June 2009 |
Lens focal length | 5.8 mm |
Width | 2,592 px |
Height | 1,944 px |
Bits per component |
|
Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 180 dpi |
Vertical resolution | 180 dpi |
Software used | Adobe Photoshop CS5 Macintosh |
File change date and time | 16:28, 15 December 2011 |
Y and C positioning | Centered |
Exif version | 2.2 |
Date and time of digitizing | 04:35, 17 June 2009 |
Meaning of each component |
|
Image compression mode | 5 |
APEX shutter speed | 6.3125 |
APEX aperture | 2.96875 |
APEX exposure bias | 0 |
Maximum land aperture | 2.96875 APEX (f/2.8) |
Subject distance | 0.28 meters |
Metering mode | Pattern |
Flash | Flash did not fire, compulsory flash suppression |
Supported Flashpix version | 1 |
Color space | Uncalibrated |
Focal plane X resolution | 11,520 |
Focal plane Y resolution | 11,571.428571429 |
Focal plane resolution unit | inches |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Manual white balance |
Digital zoom ratio | 1 |
Scene capture type | Standard |
Lens used | 5.8-17.4 mm |
Date metadata was last modified | 11:28, 15 December 2011 |
Unique ID of original document | xmp.did:F97F117407206811AE569A79D1689595 |