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Why Opposites Do Not Always Attract Thursday, September 17, 2009 - Anuradha Menon Home >> Headlines >> Physics   
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It's a natural fact that opposites attract — or so scientists thought. But a new study of fluid droplets shows that opposites can sometimes bounce right off one another. The results may seem esoteric, but they could have big implications for everything from oil refining to microfluidic 'lab-on-a-chip' technologies. The work began as a laboratory accident. William Ristenpart was studying how the shape of a water column in oil changed as it was drawn towards an electrically charged plate. (source: nature.com)
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