File:Watch automatic mainspring.jpg
From Wikimedia Commons, the free media repository
Jump to navigation
Jump to search
Size of this preview: 800 × 584 pixels. Other resolutions: 320 × 234 pixels | 640 × 467 pixels | 1,024 × 748 pixels | 1,280 × 935 pixels | 1,728 × 1,262 pixels.
Original file (1,728 × 1,262 pixels, file size: 352 KB, MIME type: image/jpeg)
File information
Structured data
Captions
Summary
[edit]DescriptionWatch automatic mainspring.jpg |
English: A mainspring in a Sea-Gull ST16 wristwatch movement. This watch is "automatic" or self-winding, which means that there is an eccentric weight mechanism in the watch which winds the spring using the motion of the owner's wrist. To prevent the mainspring from being overwound, which could result in the mainspring breaking, the spring is attached to the barrel which contains it with an expansion spring "bridle" device. When the watch is fully wound, further winding pulls the end of the mainspring bridle loose and it just slides along the barrel wall, so the mainspring can't be broken by overwinding. This photo is taken through the face of a skeleton watch, as seen in File:Automatic skeleton watch.jpg. A similar spring uncoiled is seen File:Mainspring Chinese uncoiled.jpg |
Source | Own work |
Author | Hustvedt |
Licensing
[edit]I, the copyright holder of this work, hereby publish it under the following licenses:
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported 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.
- share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
Permission is granted 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. A copy of the license is included in the section entitled GNU Free Documentation License.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue |
You may select the license of your choice.
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 19:38, 27 February 2009 | 1,728 × 1,262 (352 KB) | Hustvedt (talk | contribs) | {{Information |Description={{en|1=A mainspring on a Sea-Gull ST16 movement, which is an automatic. This is through the face of a skeleton watch.}} |Source=Own work by uploader |Author=Hustvedt |Date= |Permission= |other_versions= }} [[Ca |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.
File usage on other wikis
The following other wikis use this file:
- Usage on ar.wikipedia.org
- Usage on en.wikipedia.org
- Usage on es.wikipedia.org
- Usage on fa.wikipedia.org
- Usage on fr.wikipedia.org
- Usage on ja.wikipedia.org
- Usage on zh.wikipedia.org
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 | PENTAX Corporation |
---|---|
Camera model | PENTAX K100D |
Exposure time | 1/350 sec (0.0028571428571429) |
F-number | f/5.6 |
ISO speed rating | 200 |
Date and time of data generation | 12:30, 27 February 2009 |
Lens focal length | 100 mm |
Orientation | Normal |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | GIMP 2.4.5 |
File change date and time | 12:35, 27 February 2009 |
Y and C positioning | Co-sited |
Exposure Program | Normal program |
Exif version | 2.21 |
Date and time of digitizing | 12:30, 27 February 2009 |
APEX exposure bias | 0 |
Metering mode | Center weighted average |
Flash | Flash did not fire, compulsory flash suppression |
Color space | sRGB |
Sensing method | One-chip color area sensor |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Focal length in 35 mm film | 150 mm |
Scene capture type | Standard |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Subject distance range | Macro |