File:Carbonate crystals forming on ancient bronze coin.ogv
Carbonate_crystals_forming_on_ancient_bronze_coin.ogv (Ogg Theora video file, length 39 s, 208 × 208 pixels, 641 kbps, file size: 2.97 MB)
Captions
Summary
editDescriptionCarbonate crystals forming on ancient bronze coin.ogv |
English: The coin had been immersed in an approximately 3% sodium sesquicarbonate/2% sodium bicarbonate w/v solution for four weeks to treat bronze disease.
It had been rinsed four times previously and surface water patted off with the same crystallisation observed due to carbonates having infiltrated the coin's surface. While unsightly it is not harmful to the coin. It can be brushed off but will reform over time. With continued soaking in water the carbonate will eventually be removed and the coin can be displayed or be coated with a surface sealant. The video's original duration was 6:30 seconds and has been accelerated to 10 times normal speed. The video starts immediately after rinsing and surface drying. No further crystallisation was obvious after 6:30. |
Date | |
Source | Own work |
Author | Waerloeg |
Licensing
edit- 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.
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 03:06, 8 April 2014 | 39 s, 208 × 208 (2.97 MB) | Waerloeg~commonswiki (talk | contribs) | User created page with UploadWizard |
You cannot overwrite this file.
File usage on Commons
The following page uses this file:
- File:Carbonate crystals forming on ancient bronze coin.ogg (file redirect)
Transcode status
Update transcode statusFile usage on other wikis
The following other wikis use this file:
- Usage on en.wikipedia.org
- Usage on hr.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.
Software used | Xiph.Org libtheora 1.1 20090822 (Thusnelda) |
---|