Golden eye in UV light

Golden eye in UV light

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Caption: Golden eye in UV light. Golden eye (Bidens ferulifolia) flower in ultraviolet (UV) light. The bull's-eye UV pattern is a result of the flower either reflecting UV (light areas) or absorbing UV (dark areas). This pattern is known as a 'nectar guide' and is thought to attract insect pollinators that can see in UV light. This image was taken on a digital camera adapted to filter and detect UV light. The resulting image is monochrome as UV light is outside the visible sprectrum and does not have true colour. See image B802/1169 for the same flower seen in daylight.

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Keywords: asteraceae, bidens ferulifolia, biological, biology, black-and-white, botanical, botany, bull's eye, bull's-eye, bulls eye, compositae, electromagnetic spectrum, european, false-coloured, flora, floral, flower, flowers, golden eye, honey guide, inflorescence, mark, marks, monochrome, nature, nectar guide, one, petal, petals, plant, plants, pollination, single, spectrum, ultraviolet, uv, uv absorbance, uv absorbing, uv pattern, uv photography, uv reflectance, uv reflecting

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