File:DeviationsFromIPK.svg
Jump to navigation
Jump to search
Size of this PNG preview of this SVG file: 600 × 450 pixels. Other resolutions: 320 × 240 pixels | 640 × 480 pixels | 1,024 × 768 pixels | 1,280 × 960 pixels | 2,560 × 1,920 pixels.
Original file (SVG file, nominally 600 × 450 pixels, file size: 35 KB)
Captions
Captions
Add a one-line explanation of what this file represents
Summary[edit]
| Description |
English: In 1889 40 identical platinum-iridium kilogram weights were delivered to the International Bureau of Weights and Measures (BIPM). One was selected as the International Prototype Kilogram (IPK), four were kept as working copies and the rest were delivered to signatories of the Metre Convention. Another 40 were delivered in 1946, two of which were kept as working copies. On delivery each weight was calibrated against the IPK. Recalibrations were carried out in 1946, 1991 and 2014. The calibrations showed that the weights were not 100% stable relative to each other. This chart shows the variation of BIPM's working copies against the IPK. Note - the working copy with serial number 8 was stamped with a "41" in error, hence it is referred to as 8(41). |
| Date | |
| Source | Own work |
| Author | Martinvl |
Licensing[edit]
I, the copyright holder of this work, hereby publish it under the following license:
This file is licensed under the Creative Commons Attribution-Share Alike 4.0 International 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.
|
This image has been assessed under the valued image criteria and is considered the most valued image on Commons within the scope: Chart showing how the six working prototype kilograms drifted from the International Prototype Kilogram. You can see its nomination here. |
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 21:09, 12 August 2018 | | 600 × 450 (35 KB) | Martinvl (talk | contribs) | Improvements in annotations |
| 17:48, 11 August 2018 |  | 600 × 450 (35 KB) | Martinvl (talk | contribs) | Different shade of green used in charts | |
| 17:12, 11 August 2018 |  | 600 × 450 (37 KB) | Martinvl (talk | contribs) | User created page with UploadWizard |
You cannot overwrite this file.
File usage on Commons
The following 3 pages use this file:
File usage on other wikis
The following other wikis use this file:
- Usage on ba.wikipedia.org
- Usage on be-tarask.wikipedia.org
- Usage on bg.wikipedia.org
- Usage on cv.wikipedia.org
- Usage on de.wikipedia.org
- Usage on es.wikipedia.org
- Usage on et.wikipedia.org
- Usage on fr.wikipedia.org
- Usage on hu.wikipedia.org
- Usage on nl.wikipedia.org
- Usage on ru.wikipedia.org
- Usage on sl.wikipedia.org
- Usage on sv.wikipedia.org
- Usage on uk.wikipedia.org
