News tagged with light

A marine creature's magic trick explained

Tiny ocean creatures known as sea sapphires perform a sort of magic trick as they swim: One second they appear in splendid iridescent shades of blue, purple or green, and the next they may turn invisible (at least the blue ...

date50 minutes ago in Materials Science
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Gas sensors sound the smoldering fire alarm

Smoke detectors are everywhere, but still thousands of people die in fires annually. Fire gas detectors, which detect carbon monoxide and nitrogen oxide, identify fires at an early stage. Thanks to a new measurement principle ...

date1 hour ago in Engineering
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