Tormentil in UV light. Tormentil (Potentilla erecta) flowers coloured to show areas that reflect (white) or absorb (dark blue) ultraviolet (UV) light.

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Tormentil in UV light. Tormentil (Potentilla erecta) flowers coloured to show areas that reflect (white) or absorb (dark blue) ultraviolet (UV) light. The bull's-eye pattern, known as a 'nectar guide', is thought to help attract pollinating insects, which can see in UV light. This image was taken on a digital camera adapted to filter and detect UV light. The resulting monochrome image was coloured on a computer. UV light is invisible to humans and does not have a true colour.

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Size: 3880px × 2608px
Photo credit: © BJORN RORSLETT/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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