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Links 1 through 10 of 16 by Tom Henderson tagged refraction

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Light playing on water drops, dust or ice crystals in the atmosphere produces a host of visual spectacles - rainbows, halos, glories, coronas and many more. Some can be seen almost every day or so, some are once in a lifetime sights. Find out where to see

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Sundogs, solar halos, iridescent clouds, and other exquisite phenomena caused by reflection or diffraction of sunlight in the upper atmosphere.

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A collection of professional photographs of optical phenomenon - mirages, green flashes, rainbows, etc. Very well done.

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A discussion of color blindness and its causes. Includes a wonderful photograph of the rods and cones of the eye.

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Discussion of how our eyes sense light intensity and frequency using rods and cones.

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A great picture for starting a discussion of color, refraction, and lenses. From Flickr.

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