Images Dated 10th March 2004

In-camera motion blur image of a female Yellow Seahorse (Hippocampus kuda). Lembeh Strait

In-camera motion blur image of a female Yellow Seahorse (Hippocampus kuda). Lembeh Strait, Sulawesi, Indonesia, Molluca Sea, March

© www.naturepl.com

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Quantum entanglement equipment

Quantum physicists with equipment used in a quantum entanglement experiment. Entanglement is a property of a pair of particles in which a change to one has an instantaneous effect on the other, no matter how far apart they are. Researchers at Vienna University, Austria, split entangled photon pairs and sent each photon to a separate receiver. They performed this both in fibre optic wires and through the air. Entanglement was confirmed by the detectors in both cases. It is hoped that this entanglement will find uses in cryptography, quantum computing and satellite communications. Photographed in 2003. The double exposure effect illustrates the oddness of the quantum world

© VOLKER STEGER/SCIENCE PHOTO LIBRARY

CT scanning

MODEL RELEASED. CT scanning. Radiologist preparing a woman for a CT (computed tomography) scan, seen behind a computer monitor in a control room. CT scanning is a diagnostic technique in which numerous short bursts of low dose X-rays are passed through the body at different angles. A computer then produces a cross-sectional image of the tissues. A CT scan provides more detail than a normal X-ray, yet it reduces the patient's exposure to harmful radiation. It is commonly used to locate and assess tumours

© Michael Donne/Science Photo Library