Ofbyld:CGKilogram.jpg

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A computer-generated image of the International Prototype kilogram (IPK), which is made from an alloy of 90% platinum and 10% iridium (by weight) and machined into a right-circular cylinder (height = diameter) of 39.17 mm. The IPK is kept at the Bureau International des Poids et Mesures (International Bureau of Weights and Measures) in Sèvres on the outskirts of Paris.

The geometry of this computer model was based on the actual specifications being used for experiments in new manufacturing techniques to produce new kilogram mass standards.

Solid model and ray-traced image was created using Cobalt CAD software.

This image was provided by the contributor because of the dearth of uncopyrighted photographs of the actual IPK. This is expected to be a chronic limitation given that…

  1. the IPK is stored in a vault nearly all the time,
  2. there is no general public access to the BIPM (and certainly none to the vault),
  3. and working copies of the IPK are used at the BIPM for routine calibrations for years on-end.
Datum Uploaded August 10, 2007
Boarne Originally uploaded to English Wikipedia as CGKilogram.jpg
Auteur en:User:Greg L
Tastimming
(Reusing this file)
w:fy:Creative Commons
Nammefermelding Lyk diele
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. Subject to disclaimers.
Fiel jo frij:
  • te dielen – it wurk te kopiearjen, fersprieden en út te stjoeren
  • te fermingen – it wurk oan te passen
Under de neikommende betingsten:
  • Nammefermelding – 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.
  • Lyk diele – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
This licensing tag was added to this file as part of the GFDL licensing update.
GNU head Der wurdt tastimming jûn ta kopiearjen, fersprieden en/of wizigjen fan dit dokumint ûnder de betinksten fan de GNU-lisinsje foar iepen dokumintaasje, ferzje 1.2, as eltse lettere ferzje útjûn troch de Free Software Foundation; sûnder Ynfariante Seksjes, sûnder Omkaftteksten foar de Foarkante en sûnder Omkaftteksten foar de Efterkante. In kopy fan de lisinsje is opnaam yn de seksje "Text of the GNU Free Documentation License". Subject to disclaimers.

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  • 19:00, August 10, 2007 . Greg L . 1400×1024 (535,748 bytes)
  • 08:30, August 10, 2007 . Greg L . 1024×740 (128,856 bytes) (A computer-generated image of the international prototype of the kilogram, which is made from an alloy of 90% platinum and 10% iridium (by weight) and machined into a right-circular cylinder (height = diameter) of [[1 E-2 m|39 )

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Klik op in datum/tiid om it bestân te besjen sa't it op dat stuit wie.

Datum/TiidMiniatuerôfmjittingsMeidoggerOpmerking
lêste5 jun 2017, 23.49Miniatuer foar de ferzje fan 5 jun 2017 om 23.491.400 × 1.024 (590 KB)GnashOptimized file size.
20 okt 2009, 18.53Miniatuer foar de ferzje fan 20 okt 2009 om 18.531.400 × 1.024 (608 KB)Greg A LPicture carefully tweaked in contrast, brightness, and color balance to better work with monitors that use PC gamma
18 okt 2009, 01.31Miniatuer foar de ferzje fan 18 okt 2009 om 01.311.400 × 1.024 (557 KB)Greg A LChange from absolutely absurd, crap job of lightening by previous editor. To that editor: Create a NEW file and use that if you like. Do not change this one.
18 okt 2009, 00.59Miniatuer foar de ferzje fan 18 okt 2009 om 00.59800 × 585 (26 KB)Orion 8more light
11 aug 2007, 16.32Miniatuer foar de ferzje fan 11 aug 2007 om 16.321.400 × 1.024 (523 KB)EPO{{Information |Description=A computer-generated image of the '''International Prototype''' '''kilogram''' (IPK), which is made from an alloy of 90% platinum and 10% iridium (by weight) and machined into a right-circular cylinder (height = diameter) of 39.

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