Images Dated 18th March 1998

Underside of Arecibo radio telescope

Arecibo radio observatory. View of the underside of the dish antenna of the Arecibo radio telescope, the world's largest. Built into a volcanic crater in Puerto Rico, Arecibo's dish is made of 38, 800 aluminium panels which reflect radio waves up to a receiving antenna suspended over it (at upper centre). The dish is 305 metres across and has an area of about 70, 000 square metres. The dish is so large it cannot be steered, and instead the antenna is moved over it to scan the sky. Arecibo can send and receive signals to examine planets and asteroids and also analyse Earth's upper atmosphere. Photographed after Arecibo's upgrade in 1997

© DAVID PARKER/SCIENCE PHOTO LIBRARY

Zoom effect of eye with circuit board in iris

Machine vision. Zoom effect of human eye with circuit board in iris. The image might represent artificial intelligence (AI), the attempts being made by computer engineers to provide machines with the intelligence of living creatures. This includes machine vision, that is, the simulation of human vision as input to a machine. Examples are found in robotics and surveillance equipment

© VICTOR DE SCHWANBERG/SCIENCE PHOTO LIBRARY

Birds Nest Fungi (Cyathus sp) Spores expelled by Rain, Rainforest, Manu NP, Peru

Bird's Nest Fungi (Cyathus sp) Spores expelled by Rain, Rainforest, Manu NP, Peru

© Fogden, Michael / Animals Animals/Earth Scenes

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