Monday, December 12, 2005

Flying over it

Flying over land is always interesting. mountains and canyons are some of my favorite.

if anyone's into optics - here's an image of a halo taken through a linear polarizer. for those who care - many things are birefringent. different polarizations (e field wiggles) travel though materials differently so that when you use a polarizer (which cuts out certain polarizations) you get weird color fringes, especially when looking though airplane windows. try polarized sunglasses sometime and look at other cars. the halo comes from internal reflections in water drops or ice crystals. and, the bonus-mountain in the background seals the deal.


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