The structure of a bird s feather is constructed such that the contact angle of water on a typical feather is as high as 150 degrees.
(The structure of a bird s feather; is constructed; such that the contact angle of water on a typical feather is as high as 150 degrees) (the contact angle of water on a typical feather; is; as high as 150 degrees)
The structure of a bird s feather the contact angle of water on a typical feather
is constructed is
such that the contact angle of water on a typical feather is as high as 150 degrees
as high as 150 degrees