Coltsfoot in UV light. Coloured photograph of coltsfoot (Tussilago farfara) flowers showing the pattern of absorbed (dark areas) and reflected (yellow) ultraviolet (UV) light on the flower heads. These 'bull's-eye' patterns are known as 'nectar guides' and help to attract pollinating insects,which can see UV light. Humans are unable to see these patterns. This image was taken using a digital camera adapted to filter and detect UV light. The resulting monochrome image was coloured on a computer. UV light is outside the visible spectrum and does not have a true colour. See image B838/1219 for normal daylight version | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Rorslett, Bjorn |
Bildgröße: | 3879 px × 2607 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: |
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