Feather, SEM
Videonummer 11921590
| 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. | |
| Lizenzart: | Lizenzfrei |
| Credit: | Science Photo Library / Gschmeissner, Steve |
| Modell-Rechte: | nicht erforderlich |
| Eigentums-Rechte: | nicht erforderlich |
| Länge: | 25 Sekunden |
| Seitenverhältnis: | 16:9 |
| Restrictions: | - |
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