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Noise-canceling optics

Engineers at Caltech have created the visual analogue of noise-canceling headphones—a camera system that can obtain images of objects obscured by murky media, such as fog or clouds, by canceling out the glare.
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Noise-canceling optics

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(California Institute of Technology) Destructive interference can be used to see through fog using a technology reminiscent of noise-canceling headphones.

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