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granule |
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granule, in astronomy: see photosphere photosphere, luminous, apparently opaque layer of gases that forms the visible surface of the sun or any other star. The photosphere lies between the dense interior gases and the more attenuated gases of the chromosphere.
..... Click the link for more information. . granule Geology a single rock fragment in gravel, smaller than a pebble but larger than a sand grain granule [′gran·yül] (astronomy) A convective cell in the solar photosphere, about 600 miles (1000 kilometers) in diameter. (geology) A somewhat rounded rock fragment ranging in diameter from 2 to 4 millimeters; larger than a coarse sand grain and smaller than a pebble. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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