News tagged with light wavelength

Hubble traps galactic fireflies

(Phys.org)—Luminous galaxies glow like fireflies on a dark night in this image snapped by the NASA/ESA Hubble Space Telescope. The upper central galaxy in this image is a gigantic elliptical galaxy designated ...

dateNov 18, 2012 in Astronomy
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Shedding light on Anderson localization

Waves do not spread in a disordered medium if there is less than one wavelength between two defects. Physicists from the universities of Zurich and Constance have now proved Nobel Prize winner Philip W. Anderson's ...

dateDec 20, 2012 in Optics & Photonics
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Organic photodiodes for sensor applications

Powerful, inexpensive and even flexible when they need to be, organic photodiodes are a promising alternative to silicon-based photodetectors. They are used to improve light sensitivity in cameras and to ...

dateMay 14, 2014 in Engineering
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