Thursday, December 29, 2011

UCSD reveals surprise about rainbows |

UCSD reveals surprise about rainbows | “Raindrops differ in size, and the larger ones are more affected by air pressure as they fall,” said Jensen. “The bottom of the drops flatten out some. They take on a shape that’s more like a hamburger than a drop.”

These “burgeroids,” as they came to be known, bend and redirect light a bit differently than circular raindrops. Jensen and Sadeghi tweaked their computer models to reflect this insight, and produced the first accurate simulation of twinned rainbows....

“We thought everything about rainbows was understood. But it’s not. It turns out they’re more complicated than people thought.”

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