File:330-PSA-153-63 (USN 711327) (22333556156).jpg
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Size of this preview: 753 × 599 pixels. Other resolutions: 302 × 240 pixels | 603 × 480 pixels | 965 × 768 pixels | 1,280 × 1,019 pixels | 2,560 × 2,038 pixels | 2,756 × 2,194 pixels.
Original file (2,756 × 2,194 pixels, file size: 2.69 MB, MIME type: image/jpeg)
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Structured data
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Summary
[edit]Description330-PSA-153-63 (USN 711327) (22333556156).jpg | 330-PSA-153-63 (USN 711327): Gravity stabilization system employing the same principle that keeps the heavier side of the moon facing us is illustrated in this artist’s concept. A signal sent to the satellite commands the boom to extend after the satellite has been despun and is facing roughly downward while slowly turning the Earth’s magnetic field. When the boom which has a weight on its end, is deployed the satellite is kept in this position by the difference between the gravity forces acting on the satellite proper and on this weighted boom. At this point, the satellite is a swaying pendulum – like through about 40 degrees of an arc. Then a fine spring is automatically released to damp this remaining sway. Such a system has now operated perfectly in a Navy satellite according to its designers at the Applied Physics Laboratory of the Johns Hopkins University. The oscillations of the satellite have been damped to very low values and are continuing to reduce in value. Photograph released July 22, 1963. (2015/10/20). |
Date | |
Source | 330-PSA-153-63 (USN 711327) |
Author | National Museum of the U.S. Navy |
Licensing
[edit]This image was originally posted to Flickr by Photograph Curator at https://flickr.com/photos/127906254@N06/22333556156 (archive). It was reviewed on 10 July 2018 by FlickreviewR 2 and was confirmed to be licensed under the terms of the Public Domain Mark. |
10 July 2018
Public domainPublic domainfalsefalse |
This file is a work of a sailor or employee of the U.S. Navy, taken or made as part of that person's official duties. As a work of the U.S. federal government, it is in the public domain in the United States.
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This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. |
https://creativecommons.org/publicdomain/mark/1.0/PDMCreative Commons Public Domain Mark 1.0falsefalse
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 04:58, 10 July 2018 | 2,756 × 2,194 (2.69 MB) | Hiàn (alt) (talk | contribs) | Transferred from Flickr via #flickr2commons |
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Metadata
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 | NIKON CORPORATION |
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Camera model | NIKON D80 |
Exposure time | 1/200 sec (0.005) |
F-number | f/7.1 |
ISO speed rating | 1,600 |
Date and time of data generation | 10:17, 20 October 2015 |
Lens focal length | 20 mm |
Width | 3,872 px |
Height | 2,592 px |
Bits per component |
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Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | Adobe Photoshop CS6 (Windows) |
File change date and time | 07:11, 21 October 2015 |
Y and C positioning | Co-sited |
Exposure Program | Not defined |
Exif version | 2.21 |
Date and time of digitizing | 10:17, 20 October 2015 |
Meaning of each component |
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Image compression mode | 4 |
APEX shutter speed | 7.643856 |
APEX aperture | 5.655638 |
APEX exposure bias | 0 |
Maximum land aperture | 4 APEX (f/4) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash did not fire, compulsory flash suppression |
DateTime subseconds | 70 |
DateTimeOriginal subseconds | 70 |
DateTimeDigitized subseconds | 70 |
Supported Flashpix version | 1 |
Color space | sRGB |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Scene type | A directly photographed image |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Focal length in 35 mm film | 30 mm |
Scene capture type | Standard |
Scene control | High gain up |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Subject distance range | Unknown |
Serial number of camera | 3073408 |
Lens used | 12.0-24.0 mm f/4.0 |
Date metadata was last modified | 03:11, 21 October 2015 |
Unique ID of original document | FD0275A7F690BAC043927AA1FCBE43F5 |