File:Granules.jpg

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English: Granules are small (about 1000 km across) cellular features that cover the entire Sun except for those areas covered by sunspots. These features are the tops of convection cells where hot fluid rises up from the interior in the bright areas, spreads out across the surface, cools and then sinks inward along the dark lanes. Individual granules last for only about 20 minutes. The granulation pattern is continually evolving as old granules are pushed aside by newly emerging ones. The flow within the granules can reach supersonic speeds of more than 7 km/s (15,000 mph) and produce sonic "booms" and other noise that generates waves on the Sun's surface.

中文：米粒组织

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http://solarscience.msfc.nasa.gov/feature1.shtml

Originally from zh.wikipedia; description page is/was here.

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	This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
	Warnings: Use of NASA logos, insignia and emblems is restricted per U.S. law 14 CFR 1221. The NASA website hosts a large number of images from the Soviet/Russian space agency, and other non-American space agencies. These are not necessarily in the public domain. Materials based on Hubble Space Telescope data may be copyrighted if they are not explicitly produced by the STScI.[1] See also {{PD-Hubble}} and {{Cc-Hubble}}. The SOHO (ESA & NASA) joint project implies that all materials created by its probe are copyrighted and require permission for commercial non-educational use. [2] Images featured on the Astronomy Picture of the Day (APOD) web site may be copyrighted. [3] The National Space Science Data Center (NSSDC) site has been known to host copyrighted content. Its photo gallery FAQ states that all of the images in the photo gallery are in the public domain "Unless otherwise noted."

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2004-07-05 13:57 Shizhao 818×900×8 (115414 bytes) 米粒组织

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	03:21, 12 October 2007		818 × 900 (113 KB)	Shizhao (talk \| contribs)	{{Information \|Description=米粒组织来自http://science.nasa.gov/ssl/pad/solar/feature1.htm \|Source=Originally from [http://zh.wikipedia.org zh.wikipedia]; description page is/was [http://zh.wikipedia.org/w/index.php?title=Image%3AGranules.jpg here]

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File usage on other wikis

The following other wikis use this file:

Usage on cs.wikipedia.org
- Granulace (astronomie)
Usage on de.wikipedia.org
- Granulation (Astronomie)
Usage on fi.wikipedia.org
- Granula
Usage on hr.wikipedia.org
- Fakula
Usage on ko.wikipedia.org
- 쌀알무늬
Usage on no.wikipedia.org
- Granulasjon
Usage on sv.wikipedia.org
- Granuler

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File:Granules.jpg

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