File:Pi-unrolled-720.gif

冇更高解像度嘅圖像。

Pi-unrolled-720.gif ‎（720 × 228 像素，檔案大細：141 KB ，MIME類型：image/gif、循環、45格、8.1 s）

呢個檔案係出自維基同享。下面係佢喺嗰邊嘅描述。
Commons 收集自由嘅媒體檔案。你可以去幫手。

摘要

描述

Bahasa Indonesia: Animasi dari tindakan membuka gulungan keliling lingkaran itu, menggambarkan rasio π.

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

Português: Animação desenrolando a circunferência de um círculo, ilustrando a razão π.

Sunda: Animasi ngukur kuriling bunderan nu ngagambarkeun rasio π (pi).

Tiếng Việt: Tương quan giữa chu vi và đường kính của hình tròn, minh họa số π.

Türkçe: Bir dairenin çevresini kullanarak π oranını gösteren bir animasyonu.

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 : صورة مُتحرِّكة لتدحرج محيط دائرة توضح النسبة ط

فارسی : انیمیشنی که محیط دایره و رابطهٔ آن با عدد پی را نشان می‌دهد.

日期

2006年10月7號

來源

Edited version of Image:Pi-unrolled.gif.

作者

John Reid

許可
(重用呢個檔案)

根據自由軟體基金會發佈嘅無固定段落、封面文字同封底文字GNU自由文件授權條款第1.2或打後嘅版本，你獲授權可以重製、散佈同埋修改爾份文件。授權條款嘅副本喺章節GNU自由文件授權條款。

	呢個檔案用共享創意姓名標示-非商業性-相同方式分享3.0 未本地化版本條款授權。

	你可以：去分享 – 複製、發佈同傳播呢個作品再改 – 創作演繹作品要遵照下面嘅條件：署名 – 你一定要畀合適嘅表彰、畀返指向呢個授權條款嘅連結，同埋寫明有無改過嚟。你可以用任何合理方式去做，但唔可以用任何方式暗示授權人認可咗你或者你嘅使用方式。相同方式分享 – 如果你用任何方式改過呢個作品，你必須要用返原本或者相似嘅條款發佈。
	This licensing tag was added to this file as part of the GFDL licensing update.CC BY-SA 3.0truetrue

Other versions

Slower animation

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: .

評核

圖 of the year

This file was a finalist in Picture of the Year 2011.
This is a featured picture on Wikimedia Commons (特色靚相) and is considered one of the finest images. See its nomination here.

維基百科

This is a featured picture on the Arabic language Wikipedia (صور مختارة) and is considered one of the finest images. See its nomination here.

This is a featured picture on the German language Wikipedia (Exzellente Bilder) and is considered one of the finest images. See its nomination here.

This is a featured picture on the English language Wikipedia (Featured pictures) and is considered one of the finest images. See its nomination here.

This is a featured picture on the Persian language Wikipedia (نگاره‌های برگزیده) and is considered one of the finest images. See its nomination here.

This is a featured picture on the Malay language Wikipedia (Gambar pilihan) and is considered one of the finest images. See its nomination here.

This is a featured picture on the Tamil language Wikipedia (இன்றைய சிறப்புப் படம்) and is considered one of the finest images. See its nomination here.

This is a featured picture on the Turkish language Wikipedia (Seçkin resimler) and is considered one of the finest images. See its nomination here.

If you have an image of similar quality that can be published under a suitable copyright license, be sure to upload it, tag it, and nominate it.

This image was selected as picture of the day on Wikimedia Commons for 14 March 2012. It was captioned as follows:

English: Animation of the act of unrolling a circle's circumference, illustrating the ratio π.

Other languages:

Čeština: Animace souvislosti obvodu kruhu s konstantou π

Dansk: Animation af udrulningen af en cirkels omkreds, hvorved forholdstallet mellem cirklens omkreds og diameter, π, illustreres.

Deutsch: Animation des Abrollens eines Kreisumfanges, zur Veranschaulichung des durch π ausgedrückten Verhältnisses.

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, para ilustrar la proporción de π.

Français : Animation de l'acte de déroulement de la circonférence d'un cercle, illustrant le ratio π.

Italiano: Animazione che mostra lo srotolamento della circonferenza di un cerchio, illustrando il rapporto π.

Magyar: A kör kerületének egyenesre fejtése gördítéssel, a

\pi

arányszám szemléltetésére.

Nederlands: Animatie van de handeling van het uitrollen van de omtrek van een cirkel ter illustratie van de verhouding π.

Македонски: Лудолфовиот број (π) претставен со одвиткување на обиколката на кружница.

Русский: Анимация для демонстрации длины окружности

Українська: Анімація розгортання обводу кола, яка ілюструє число π як співвідношення довжини кола до його діаметра.

ქართული: წრის სიგრძის სადემონსტრაციო ანიმაცია.

한국어: 원둘레를 전개하며 원주율을 묘사하고 있는 애니메이션

日本語：円の曲線を伸張して円周率 π を示すアニメーション。

中文：解开圆周的动画，用于描述圆周率。

This image was selected as picture of the day on Vietnamese Wikipedia.

檔案歷史

撳個日期／時間去睇響嗰個時間出現過嘅檔案。

	日期／時間	尺寸	用戶	註解
現時	2013年1月17號 (四) 10:21	720 × 228（141 KB）	Mormegil	Reverted to version as of 22:38, 5 July 2012: final frame moved at the front, for print and browsers with animations disabled
	2013年1月17號 (四) 08:43	720 × 228（138 KB）	Yunosuro	Reverted to version as of 02:47, 6 March 2010
	2012年7月5號 (四) 22:38	720 × 228（141 KB）	TMg
	2010年3月6號 (六) 02:47	720 × 228（138 KB）	Aiyizo	Optimized animation.
	2006年10月18號 (三) 08:56	720 × 228（260 KB）	TadejM
	2006年10月12號 (四) 07:16	720 × 228（260 KB）	MGTom	{{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