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 'Halo effect' explains brightest patches of sky

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Date posted: 31/03/2009

In a discovery that has knock-on effects for atmospheric simulation in VR, researchers Tamas Varnai and Alexander Marshak at the NASA Goddard Space Flight Center in Greenbelt, Maryland, have shown why clear sky several kilometers from clouds appears brighter than that nearer clouds.

People had assumed that this was due to varying levels of tiny particles in the air ? now research shows that the effect is actually mostly due to light reflected off the cloud and bouncing off the particles. More of the small airborne particles aggregate around clouds or swell in size as they absorb some of the cloud's water.

See the full Story via external site: www.newscientist.com



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