News tagged with blue light

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 ...

dateSep 02, 2015 in Engineering
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Image: The colors of sunset over the ISS

ESA astronaut Samantha Cristoforetti took these images from the International Space Station during her six-month mission. The Progress cargo ship and Soyuz crew spacecraft reflect sunlight as our star sets behind Earth.

dateMar 26, 2015 in Space Exploration
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What causes the sunlight flavour in milk?

Most of us have tasted milk that has been left in the sun – it has a distinctive off-flavour. The reason is that milk and other dairy products turn rancid when exposed to light.

dateMar 03, 2015 in Other
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