News tagged with infrared light
ALMA turns its eyes to Centaurus A
(Phys.org) -- A new image of the galaxy Centaurus A, made with the Atacama Large Millimeter/submillimeter Array (ALMA), shows how the observatory allows astronomers to see through the opaque dust lanes that ...
May 31, 2012 |
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Nanocrystal infrared LEDs can be made cheaply
(Phys.org) -- Light-emitting diodes at infrared wavelengths are the magic behind such things as night vision and optical communications, including the streaming data that comes through Netflix. Cornell researchers have advanced ...
Nanotechnology / Nanomaterials
May 10, 2012 |
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Spitzer sees the light of alien 'super earth'
(Phys.org) -- NASA's Spitzer Space Telescope has detected light emanating from a "super-Earth" planet beyond our solar system for the first time. While the planet is not habitable, the detection is a historic ...
May 08, 2012 |
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Wise catches aging star erupting with dust
(Phys.org) -- Images from NASA's Wide-field Infrared Survey Explorer (WISE) reveal an old star in the throes of a fiery outburst, spraying the cosmos with dust. The findings offer a rare, real-time look at ...
Apr 26, 2012 |
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Medical 'lightsabers': Laser scalpels get ultrafast, ultra-accurate, and ultra-compact makeover
Whether surgeons slice with a traditional scalpel or cut away with a surgical laser, most medical operations end up removing some healthy tissue, along with the bad. This means that for delicate areas like ...
Apr 23, 2012 |
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Probing hydrogen under extreme conditions
(Phys.org) -- How hydrogen--the most abundant element in the cosmos--responds to extremes of pressure and temperature is one of the major challenges in modern physical science. Moreover, knowledge gleaned ...
Apr 13, 2012 |
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WISE mission sees skies ablaze with blazars
(Phys.org) -- Astronomers are actively hunting a class of supermassive black holes throughout the universe called blazars thanks to data collected by NASA's Wide-field Infrared Survey Explorer (WISE). The ...
Apr 12, 2012 |
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Astronomers identify 12-billion-year-old white dwarf stars
A University of Oklahoma assistant professor and colleagues have identified two white dwarf stars considered the oldest and closest known to man. Astronomers identified these 11- to 12-billion-year-old white dwarf stars only ...
Apr 11, 2012 |
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The MIRI infrared instrument has two faces
A short new video takes viewers behind the scenes with the MIRI or the Mid-Infrared Instrument that will fly on-board NASA's James Webb Space Telescope. MIRI is a state-of-the-art infrared instrument that ...
Space & Earth / Space Exploration
Mar 29, 2012 |
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Novel plasmonic material may merge photonic and electronic technologies
Helping bridge the gap between photonics and electronics, researchers from Purdue University have coaxed a thin film of titanium nitride into transporting plasmons, tiny electron excitations coupled to light ...
Mar 27, 2012 |
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Public to get access to spectacular infrared images of galaxies
For the first time, the general public will be able to browse detailed infrared images of more than 200 galaxies. The pictures, originating from data from the orbiting Spitzer Space Telescope, will be released ...
Space & Earth / Space Exploration
Mar 27, 2012 |
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VISTA stares deep into the cosmos: Treasure trove of new infrared data made available to astronomers
(PhysOrg.com) -- ESO's VISTA telescope has created the widest deep view of the sky ever made using infrared light. This new picture of an unremarkable patch of sky comes from the UltraVISTA survey and reveals ...
Mar 21, 2012 |
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Exotic metamaterials will change optics
Duke University engineers believe that continued advances in creating ever-more exotic and sophisticated man-made materials will greatly improve their ability to control light at will.
Mar 18, 2012 |
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New WISE mission catalog of entire infrared sky released
(PhysOrg.com) -- NASA unveiled a new atlas and catalog of the entire infrared sky today showing more than a half billion stars, galaxies and other objects captured by the Wide-field Infrared Survey Explorer ...
Mar 15, 2012 |
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Metamaterials may advance with new femtosecond laser technique
Researchers in applied physics have cleared an important hurdle in the development of advanced materials, called metamaterials, that bend light in unusual ways.
Mar 08, 2012 |
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Infrared
Infrared (IR) radiation is electromagnetic radiation whose wavelength is longer than that of visible light (400-700 nm), but shorter than that of terahertz radiation (100 µm - 1 mm) and microwaves (~30,000 µm). Infrared radiation spans roughly three orders of magnitude (750 nm and 100 µm).
Direct sunlight has a luminous efficacy of about 93 lumens per watt of radiant flux, which includes infrared (47% share of the spectrum), visible (46%), and ultra-violet (only 6%) light. Bright sunlight provides luminance of approximately 100,000 candela per square meter at the Earth's surface.
For more information about Infrared, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
