Feather. Coloured scanning electron micrograph (SEM) of the structure of a feather. The flat broad vane of a feather is formed by comb-like rows of filaments called barbs,which project from either side of a central shaft (rachis,diagonally across centre). Each barb has rows of minute filaments called barbules. The barbules on one side bear hooks,while those on the other have a groove. This arrangement hooks adjacent barbs together,linking the whole structure. This makes the feather strong yet flexible and light,which is ideal for flight. Magnification: x30 when printed 10cm wide | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Gschmeissner, Steve |
Bildgröße: | 2400 px × 1789 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |