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Pi-unrolled-720.gif(720 × 228 pixels, file size: 141 KB, MIME type: image/gif, looped, 45 frames, 8.1 s)


Bahasa Indonesia: Animasi dari tindakan membuka gulungan keliling lingkaran itu, menggambarkan rasio π.
Basa Sunda: Animasi ngukur kuriling bunderan nu ngagambarkeun rasio π (pi).
Čeština: Animace souvislosti obvodu kruhu s konstantou π
Dansk: Animeret udrulning af en cirkels omkreds, illustrerende π
Deutsch: Animierter Abrollvorgang des Kreisumfanges, der die Zahl π veranschaulicht.
English: Animation of the act of unrolling a circle's circumference, illustrating the ratio π.
Español: Animación del desenrollado de la circunferencia de un círculo de diámetro uno, para ilustrar la proporción de π.
Français: Animation de l'acte de déroulement de la circonférence d'un cercle, illustrant le ratio π.
Hornjoserbsce: Animacija wotkulenja wobjima kružnicy z konstantu π
Nederlands: Pi uitgelegd door middel van een animatie
Tiếng Việt: Tương quan giữa chu vi và đường kính của hình tròn, minh họa số π.
Български: Анимация на развиване на обиколката на кръг, която илюстрира съотношението π
Македонски: Анимација на одвиткување на периметарот на еден круг, која го илустрира соодносот (константата) π.
한국어: 원주율에 대한 애니매이션π.
中文(简体)‎: 解开圆周的动画,用于描述圆周率
العربية: أنيماشن لتدحرج محيط دائرة موضحا النسبة ط
فارسی: انیمیشنی که محیط دایره و رابطهٔ آن با عدد پی را نشان می‌دهد.
Source Edited version of Image:Pi-unrolled.gif.
Author John Reid
(Reusing this file)
GNU head 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.
w:en:Creative Commons
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This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
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  • attribution – You must attribute the work in the manner specified by the author or licensor (but not in any way that suggests that they endorse you or your use of the work).
  • share alike – If you alter, transform, or build upon this work, you may distribute the resulting work only under the same or similar license to this one.
This licensing tag was added to this file as part of the GFDL licensing update.
Other versions
Annotations This image is annotated: View the annotations at Commons
This is a retouched picture, which means that it has been digitally altered from its original version. Modifications: increased resolution, anti-aliased. The original can be viewed here: Pi-unrolled.gif.


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Picture of the day This image was selected as picture of the day on Wikimedia Commons for . It was captioned as follows:
English: Animation of the act of unrolling a circle's circumference, illustrating the ratio π.

File history

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current10:21, 17 January 2013Thumbnail for version as of 10:21, 17 January 2013720 × 228 (141 KB)Mormegil (talk | contribs)Reverted to version as of 22:38, 5 July 2012: final frame moved at the front, for print and browsers with animations disabled
08:43, 17 January 2013Thumbnail for version as of 08:43, 17 January 2013720 × 228 (138 KB)Yunosuro (talk | contribs)Reverted to version as of 02:47, 6 March 2010
22:38, 5 July 2012Thumbnail for version as of 22:38, 5 July 2012720 × 228 (141 KB)TMg (talk | contribs)
02:47, 6 March 2010Thumbnail for version as of 02:47, 6 March 2010720 × 228 (138 KB)Aiyizo (talk | contribs)Optimized animation.
08:56, 18 October 2006Thumbnail for version as of 08:56, 18 October 2006720 × 228 (260 KB)Eleassar (talk | contribs)
07:16, 12 October 2006Thumbnail for version as of 07:16, 12 October 2006720 × 228 (260 KB)MGTom (talk | contribs){{Information |Description=Animation of the act of unrolling a circle's circumference, illustrating the ratio π. Oversize (720px) and anti-aliased version of Image:Pi-unrolled.gif 720×228 (266,713 bytes). |Source=en:Image:Pi-unrolled-720.gif
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