This is the diffusion (Brownian Motion) of particles - e.g. cream in coffee. I programmed this for a Computational Physics project, in C and plotted the results in gnuplot, then animated with photoshop.
Hubble Space Telescope Images & The Last Secret
(Source: gifbomb)
Opening day at Walt Disney World, Florida. Life Magazine, December 1971.
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I FREAKING LOVE DISNEY WORLD
(Source: forevercharrr)
Chris Martin, 14, greets his great-grandmother AnnaBelle Bowers, 87, who lives part time with the Martin family in Harrisburg, Pa. Occasionally, Chris stays at home to watch “Snootzie,” as the family affectionately calls her, when his parents are busy. (Kainaz Amaria/NPR)
This week NPR’s eight-week series, Family Matters: The Money Squeeze, circles back to the Martin Family, with LaDonna and David who are taking care of their two children and David’s grandmother, AnnaBelle.
Do you live in a multigenerational household? Share your candid photos and stories with us on Tumblr or on Twitter and Instagram with the tag #nprfamilymatters.
Most people value large chunks of gold – but scientists at the Vienna University of Technology are interested in gold at the smallest possible scale, because single gold atoms are potentially the most reactive catalysts for chemical reactions. However, when gold atoms are placed on a surface they tend to ball up into tiny nuggets consisting of several atoms. A team of surface scientists now managed to fix single gold atoms on special sites of an iron-oxide surface. This could open the door to more efficient catalysts, requiring less of the precious material.





