Termisk fluktuation
Atomar diffusion på en krystaloverflade. Adatomernes (beige) små bevægelser er et eksempel på termiske fluktuationer, og fluktuationerne gør det muligt for atomerne at hoppe til en anden position. Krystallens atomer (blå) ryster også, men det er ikke vist i denne animation.
Termiske fluktuationer er inden for den statistiske mekanik tilfældige fluktuationer fra en ligevægtstilstand.
Det mere generelle matematiske koncept er statistiske fluktuationer.
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Chemical surface diffusion slow.gif
Forfatter/Opretter: Runningamok19, Licens: CC BY 3.0
Animation of surface diffusion in the chemical diffusion regime. As is dictated by Fick's law, diffusion occurs with flux in the opposite direction of the concentration gradient. Not to scale on a time or spatial basis. Animation is a series of 223 images prepared using storyboard from Microsoft Powerpoint 2007. Images refreshed at 8/100 second splits.
Forfatter/Opretter: Runningamok19, Licens: CC BY 3.0
Animation of surface diffusion in the chemical diffusion regime. As is dictated by Fick's law, diffusion occurs with flux in the opposite direction of the concentration gradient. Not to scale on a time or spatial basis. Animation is a series of 223 images prepared using storyboard from Microsoft Powerpoint 2007. Images refreshed at 8/100 second splits.