News tagged with visible light

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How close to invisible can a mirror be?

(Phys.org)—In 2011, mathematicians Alexander Plakhov and Vera Roshchina proved that objects with mirror surfaces cannot be perfectly invisible. Now in a new study, Plakhov has returned to the problem, asking just how close ...

dateOct 06, 2017 in Mathematics feature
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Image: Prometheus and the Ghostly F Ring

The thin sliver of Saturn's moon Prometheus lurks near ghostly structures in Saturn's narrow F ring in this view from NASA's Cassini spacecraft. Many of the narrow ring's faint and wispy features result from its gravitational ...

dateAug 08, 2017 in Space Exploration
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Lighting the way to optimal photocatalysis

One afternoon, Carnegie Mellon University Materials Science and Engineering (MSE)'s Mohammad Islam walked into colleague Paul Salvador's office and asked what the biggest problem was in photocatalysis that he'd like to be ...

dateJul 06, 2017 in Nanomaterials
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