Infrared
hideInfrared (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
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News tagged with infrared light
The 'sci' behind the 'fi'
Dec 11, 2009 |
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As the voyagers of the Starship Enterprise boldly went to explore new worlds week after week on Star Trek, they used a host of futuristic technologies — including tricorders, holodecks, teleportation systems ...
VISTA: Pioneering new survey telescope starts work
Dec 11, 2009 |
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VISTA is the latest telescope to be added to ESO's Paranal Observatory in the Atacama Desert of northern Chile. It is housed on the peak adjacent to the one hosting the ESO Very Large Telescope (VLT) and shares ...
Galaxy Collision Switches on Black Hole
Dec 10, 2009 |
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(PhysOrg.com) -- This composite image of data from three different telescopes shows an ongoing collision between two galaxies, NGC 6872 and IC 4970.
Interactive digital art show opens in London
Dec 09, 2009 |
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The creative side of information technology went on display in London this week, in an arresting new interactive show including glowing reeds and a blinking mechanical eye.
NASA's Wise Gets Ready to Survey the Whole Sky (w/ Video)
Nov 17, 2009 |
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(PhysOrg.com) -- NASA's Wide-field Infrared Survey Explorer, or Wise, is chilled out, sporting a sunshade and getting ready to roll. NASA's newest spacecraft is scheduled to roll to the pad on Friday, Nov. ...
Astronomers explore 'last blank space' on map of the Universe
Oct 28, 2009 |
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(PhysOrg.com) -- The most distant object ever discovered is described in this week's edition of the science journal Nature. Two international teams of astronomers report their observations of a gamma-ray burst ...
IMEC unveils promising mechanically-stacked GaAs/Ge multijunction solar cell
Sep 22, 2009 |
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At the European Photovoltaic Solar Energy Conference (Hamburg, Germany), IMEC presents a mechanically-stacked GaAs/Ge multijunction solar cell. This is the first promising demonstrator of IMEC’s novel technology ...
In brief: A tiny, tunable well of light, and a string theorist's toolbox
Sep 21, 2009 |
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Promising photonic devices, and theorists attempt to determine whether particle physics and string theory can be reconciled.
Hitachi develops a 3mm thin-type finger vein authentication module
Sep 02, 2009 |
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Hitachi, Ltd. today announced the development of a 3mm thick thin-type finger vein authentication module. Finger vein authentication is a biometric identification technology which employs near infrared light ...
NASA's Spitzer Images Out-of-This-World Galaxy
Jul 23, 2009 |
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(PhysOrg.com) -- NASA's Spitzer Space Telescope has imaged a wild creature of the dark -- a coiled galaxy with an eye-like object at its center.
If Spitzer Could Talk: An Interview with NASA's Coolest Space Telescope
Space & Earth / Space Exploration
May 05, 2009 |
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NASA's Spitzer Space Telescope is about to use its last drop of the coolant that has chilled it for the past five-and-a-half years. On about May 12, give or take a week or so, the observatory is predicted ...
Star Trek-like technology offers noninvasive monitor for patients and athletes
Apr 29, 2009 |
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How long will it take to develop Star Trek-like medical technologies? The gap between science fiction and reality is closing faster than many people may think.
Light-activated 'lock' can control blood clotting, drug delivery
Mar 30, 2009 |
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Scientists have shed new light -- literally -- on a possible way to starve cancer tumors or prevent side effects from a wide range of drugs.
Hollow gold nanospheres show promise for biomedical and other applications
Nanotechnology / Bio & Medicine
Mar 22, 2009 |
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(PhysOrg.com) -- A new metal nanostructure developed by researchers at the University of California, Santa Cruz, has already shown promise in cancer therapy studies and could be used for chemical and biological ...
Study on free-space optical communication shows experimental evidence of a unique atmospheric effect
Mar 17, 2009 |
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Three members of the faculty at Stevens Institute of Technology recently collaborated on a paper focusing on free-space optical communication, which appears in the latest issue of Optics Express.
