Candid camera

Published: Monday 30 June 1997

A high-speed camera that allows aircraft to take pictures through cloud, smoke and water has been unveiled in the US. The camera was originally designed to photograph nuclear weapons tests under water. But now that nuclear testing has stopped, researchers are applying this technology to spot sea mines and for medical imaging like examining the inside of a damaged knee. The camera, which can take 4,000 pictures a second and has a shutter speed of oue-billionth of a second, emits a pulsed laser that can cut through smoke and other suspended particles in the air. The reflected light is then captured by the camera and analysed, giving a dear picture.

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