Images Dated 27th July 2004

LEP collider tunnel, CERN

Special effects photograph of LEP, the Large Electron-Positron collider at CERN, the European centre for particle physics near Geneva. LEP accelerates electrons & positrons to an energy of 50 GeV. It is housed in a circular tunnel 100m underground & 27km in circumference. The particles travel in opposite directions inside a narrow aluminium pipe which passes through large electromagnets. Test instruments sit on top of the magnets in this picture taken shortly before LEP started operations in July 1989. The particles collide at 4 points around the ring, where their interactions are recorded by 4 giant particle detectors.. Photo taken April 1989

© DAVID PARKER/SCIENCE PHOTO LIBRARY

Banff Springs Hotel And Bow Falls From Surprise Point, Banff National Park, Alberta

© Darwin Wiggett / Design Pics

Banff National Park, Banff Springs Hotel, Bow River Falls, Building, Colour Image, Daytime, Evergreen, Hotel, Light, Mountain, No People, Outdoors, Photography, Rocky Mountains, Scenic, Single Object, Surprise Point, Vertical, Waterfall

SEM of a common lacewing, Chrysopa septempunctata

Lacewing. Coloured scanning electron micrograph (SEM) of a green or common lacewing (Chrysopa septempunctata). Lacewings are flying insects which are commonly found in houses, as they are attracted by lights. The large compound eyes (brown) on the head of this lacewing give it a wide field of vision, which helps in finding prey and avoiding predators. The antennae (between eyes) also have a sensory function. Lacewings are insects distinguished by their delicate, net- veined wings (not seen). They are most active at twilight, and prey largely on aphids, which they kill with their powerful jaws (lower centre). Magnification: x4 at 6x7cm size. x9 at 5x7ins

© POWER AND SYRED/SCIENCE PHOTO LIBRARY