Compound eye of a gnat, SEM

Compound eye of a gnat, SEM

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Credit: STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY

Caption: Compound eye. Coloured scanning electron micrograph (SEM) of the surface of a compound eye from a fungus gnat (family Sciaridae). The eye consists of many rounded lenses known as ommatidia. Each ommatidium is a simple eye that sends a signal to the gnat's brain. All the signals are combined by the brain to form a mosaic view of the world. The image seen is not very sharp but good at detecting movements. Between the lenses are hair-like structures called interommatidial bristles. Magnification: x850 when printed at 10 centimetres wide.

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Keywords: anatomical, anatomy, animal, biological, biology, bristles, coloured, compound eye, entomology, eye, false-coloured, fungus gnat, gnat, hair, hairs, insect, insecta, interommatidial bristle, invertebrate, invertebrates, lens, lenses, many, multiple, nature, ocular, ommatidia, ommatidium, optical, orange, pattern, regular, scanning electron micrograph, scanning electron microscope, sciaridae, sem, vision, wildlife, zoological, zoology

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