MadSci Network: Earth Sciences

Re: How does fog affect how you see a light source

Date: Thu Mar 20 03:47:21 2008
Posted By: In Koo Kim, Physical Atmospheric Chemistry
Area of science: Earth Sciences
ID: 1205069011.Es

When a car shines the headlamps onto fog, both refraction AND diffraction 
should take place.  An observer standing inside the fog and looking at the 
headlamps will likely see a diffuse source.  Depending on the angle of the 
observer to the source, and the size of the suspended droplets, they may 
also see a rainbow (look up rainbow angle).

This is such an easy experiment, I highly recommend trying it next time 
you're standing in fog or in the clouds.

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