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Summary
| Description |
English: Diagram of the
focal ratio of a simple optical system where is the
focal length and is the diameter of the
objective. |
| Date | 27 August 2007 (original upload date) |
| Source | Own work by the original uploader |
| Author | The original uploader was Vargklo at English Wikipedia. |
Licensing
|
This work is ineligible for copyright and therefore in the public domain because it consists entirely of information that is common property and contains no original authorship. |
Original upload log
Transferred from en.wikipedia to Commons by Rezonansowy using CommonsHelper.
The original description page was
here. All following user names refer to en.wikipedia.
- 2007-08-27 21:22 Vargklo 643×341× (4462 bytes) SVG of Image:Focal ratio.png.
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 21:13, 25 November 2013 |
| 643 × 341 (4 KB) | File Upload Bot (Magnus Manske) | Transfered from en.wikipedia by User:Rezonansowy using CommonsHelper |
File usage
The following pages on the English Wikipedia use this file (pages on other projects are not listed):
Global file usage
The following other wikis use this file:
- Usage on el.wikipedia.org
- Usage on en.wikiversity.org
- Usage on he.wikipedia.org
- Usage on it.wikipedia.org
