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Project Noah Nature School
Wet feather. Most feathers are hydrophobic. The water drop, supported by network formed by barbs and barbules, sits partially on air pockets. A twofold structure of a feather flavours large contact angles and provides its water repellency. Besides, water drops act as magnifying lenses changing the pattern of the feather barbs.
Pine tree and Holm oak forest
Camera Model: NIKON D300. Exposure Time: 1/60 sec.; f/32; ISO Speed Rating: 800. Exposure Bias: 0 EV. Focal Length: 90.0 mm. Flash fired
Spotted on Jan 13, 2014
Submitted on Jan 13, 2014
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