Colours in Hoar Frost Needles
Not only thawing ice sheets can produce brilliant interference colours. Hoar frost needles also sometimes show a fascinating mixture of refraction and interference colours - see the images below! Nikon D80, Tamron Macro SP AF DI 90 mm/1 : 2.8 equipped with a polarizing filter. Processed with Adobe Photoshop Elements 6.0.
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