News tagged with light intensities

Hubble tells a tale of galactic collisions

(Phys.org) —When we look into the distant cosmos, the great majority of the objects we see are galaxies: immense gatherings of stars, planets, gas, dust, and dark matter, showing up in all kind of shapes. This Hubble picture ...

dateMay 13, 2013 in Astronomy
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Tomatoes with extra vitamin C via LED lamps

(Phys.org) —Tomatoes can contain more vitamin C if they are exposed to extra light from LED lamps while growing on the plant. This has been proven by research by Wageningen UR Greenhouse Horticulture in collaboration with ...

dateMay 09, 2013 in Biotechnology
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Continuous monitoring of UV exposure

UV lamps are used to cure coatings and adhesives in many industrial manufacturing processes. And special sensors are used to measure the intensity of the UV light applied to these surfaces. But because these sensors age too ...

dateApr 29, 2013 in Engineering
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Organic electronics—a hot matter

Organic semi-conductors could revolutionise electronics in various areas. Nowadays, components put out such high performances that they are used in small devices like mobile phones. With larger devices, however, the organic ...

dateApr 08, 2013 in Condensed Matter
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Massive stellar winds are made of tiny pieces

(Phys.org)—ESA's XMM-Newton space observatory has completed the most detailed study ever of the fierce wind from a giant star, showing for the first time that it is not a uniform breeze but is fragmented into hundreds of ...

dateFeb 05, 2013 in Astronomy
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A light to manage learning exercises

Imagine a classroom. Students are working on their exercises. The hands go up to call the teacher or assistant. It is impossible for them to know who asked first, who most needs their help, how much time the students spent ...

dateJan 21, 2013 in Social Sciences
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Astronomers measure nearby Universe's 'cosmic fog'

Researchers from the Laboratoire Leprince-Ringuet (CNRS/École Polytechnique) have carried out the first measurement of the intensity of the diffuse extragalactic background light in the nearby Universe, a fog of photons ...

dateJan 20, 2013 in Astronomy
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