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Thursday, April 09, 2009

Trivia-of-the-Day

Did I ever mention about the Tears of Wine on my blog? Anyway, it's due to the Gibb's Marangoni effect. Quoting from my notes.. Ethanol evaporates more rapidly than water. As ethanol evaporates, the effect of gravity becomes significant. The surface tension is lowered such that water runs back down the glass in rivulets. The tears of wine are observable due to the difference in the way alcohol and water refract light.

Anyhow, if you don't understand any of that... Just know that the longer the tears of wine take to run back down, the higher the alcohol content!

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