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Summary Edit


Motion of gas molecules


English Wikipedia

Date August 25th 2006
Author A.Greg,

See below.

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Translational motions—the randomized thermal vibrations of fundamental particles such as atoms and molecules—gives a substance its “kinetic temperature.” Here, the size of helium atoms relative to their spacing is shown to scale under 1950 atmospheres of pressure. These room-temperature atoms have a certain, average speed (slowed down here two trillion fold). At any given instant however, a particular helium atom may be moving much faster than average while another may be nearly motionless. Five atoms are colored red to facilitate following their motions.

Whereas the relative size, spacing, and scaled velocity of the atoms shown here are accurately represented, atoms don’t really move in 0.062-nm-thick windows; in a 3-D box, they would actually pass in front of and behind each other and collide much less often. However, the rebound kinetics of elastic collisions are accurately modeled and, if the velocities over time are plotted on a histogram, generates a perfect Maxwell-Boltzmann distribution curve.

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This page uses content from the Wikimedia Commons. The original content was at File:Translational motion.gif. The list of authors can be seen in the page history. As with this Psychology Wiki wiki, that portion of the content of Wikimedia Commons is available under the GNU Free Documentation License.

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current03:14, November 5, 2007Thumbnail for version as of 03:14, November 5, 2007300 × 263 (398 KB)PhloxBot (Talk | contribs)== Summary == {{Media-info |Description=Motion of gas molecules |Source=English Wikipedia |Date=August 25th 2006 |Author=A.Greg, |Permission= |other_versions=Single frame (for thumbnail purposes) }} ''Translation

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