News tagged with visible light

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Plasmonic device converts light into electricity

(PhysOrg.com) -- While the most common device for converting light into electricity may be photovoltaic (PV) solar cells, a variety of other devices can perform the same light-to-electricity conversion, such ...

Nov 09, 2011 feature
4.6 / 5 (16) 3 | with audio podcast

Space Image: North American Nebula

This swirling landscape of stars is known as the North America Nebula. In visible light, the region resembles North America, but in this image infrared view from NASA's Spitzer Space Telescope, the continent ...

Oct 19, 2011
5 / 5 (1) 0

Hubble survey carries out a dark matter census

(PhysOrg.com) -- The NASA/ESA Hubble Space Telescope has been used to make an image of galaxy cluster MACS J1206.2-0847. The apparently distorted shapes of distant galaxies in the background is caused by an ...

Oct 13, 2011
4.2 / 5 (6) 8 | with audio podcast

Bimetallic nanoantenna separates colors of light

Researchers at Chalmers University of Technology have built a very simple nanoantenna that directs red and blue colours in opposite directions, even though the antenna is smaller than the wavelength of light. ...

Sep 23, 2011
4.7 / 5 (6) 3 | with audio podcast

Space image: New supernova remnant lights up

(PhysOrg.com) -- Using the Hubble Space Telescope, astronomers are witnessing the unprecedented transition of a supernova to a supernova remnant, where light from an exploding star in a neighboring galaxy, ...

Sep 13, 2011
4.9 / 5 (10) 12

The central region of the Milky Way

(PhysOrg.com) -- The center of our Milky Way galaxy is about 27,000 light-years away in the direction of the constellation of Sagittarius. At the very center of the galaxy lies a black hole whose mass is about ...

Aug 15, 2011
4.7 / 5 (22) 19 | with audio podcast

Nano-LEDs emit full visible spectrum of light

(PhysOrg.com) -- Physicists from Taiwan have designed and fabricated nano-sized light-emitting diodes (LEDs) that emit light spanning the entire visible spectrum. Although the tiny full-color LEDs aren't intended ...

Jun 17, 2011 feature
4.9 / 5 (18) 2 | with audio podcast

WISE mission offers a taste of galaxies to come

(PhysOrg.com) -- An assorted mix of colorful galaxies is being released today by NASA's Wide-field Infrared Survey Explorer mission, or WISE. The nine galaxies are a taste of what's to come. The mission plans ...

May 25, 2011
4.8 / 5 (6) 5

Exploring space

(PhysOrg.com) -- One of the most powerful and ambitious astronomical satellites designed to provide the best view yet of the Universe at far-infrared and sub-millimeter wavelengths is living up to its illustrious ...

May 16, 2011
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