News tagged with heat radiation
Shining a light on the elusive 'blackbody' of energy research
A designer metamaterial has shown it can engineer emitted "blackbody" radiation with an efficiency beyond the natural limits imposed by the material's temperature, a team of researchers led by Boston College ...
Jul 22, 2011 |
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Scientists Create Material More Insulating than the Vacuum
(PhysOrg.com) -- With its complete lack of atoms, a vacuum is often considered to be the best known insulator. For this reason, vacuums are regularly used to reduce heat transfer, such as in the lining of ...
Dec 10, 2009 |
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Scientists reveal how snakes 'see' at night
Scientists revealed Sunday for the first time how some snakes can detect the faint body heat exuded by a mouse a metre (three feet) away with enough precision and speed to hunt in the dark.
Mar 15, 2010 |
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Nasa study solves case of Earth's 'missing energy'
(PhysOrg.com) -- Two years ago, scientists at the National Center for Atmospheric Research in Boulder, Colo., released a study claiming that inconsistencies between satellite observations of Earth's heat and ...
Space & Earth / Earth Sciences
Jan 30, 2012 |
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Breaking the Planck's law, at the nanoscale
(PhysOrg.com) -- A well-established physical law describes the transfer of heat between two objects, but some physicists have long predicted that the law should break down when the objects are very close together. ...
Jul 29, 2009 |
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Testing geoengineering
Solar radiation management is a class of theoretical concepts for manipulating the climate in order to reduce the risks of global warming caused by greenhouse gasses. But its potential effectiveness and risks are uncertain, ...
Oct 26, 2011 |
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No extraordinary effects from microwave and mobile phone heating
The effect of microwave heating and cell phone radiation on sample material is no different than a temperature increase, according to scientists from the Department of Chemistry and Biochemistry, Arizona State University, ...
Nov 15, 2011 |
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Sounding rockets study how winds in space drive currents in the upper atmosphere
Some 50 miles up in the sky begins a dynamic region of the atmosphere known as the ionosphere. The region is filled with charged particles created by extreme ultraviolet radiation from the sun. At the base ...
Space & Earth / Space Exploration
Jul 05, 2011 |
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NASA's SOFIA will likely help solve mysteries about our galaxy
(PhysOrg.com) -- How were millions of young stars able to form at the center of our Milky Way galaxy in the presence of an enormous black hole with a mass 4 million times that of the sun? This and other important ...
Aug 26, 2010 |
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Computer model demonstrates that white roofs may successfully cool cities
Painting the roofs of buildings white has the potential to significantly cool cities and mitigate some impacts of global warming, a new study indicates. The research, which is the first computer modeling study to simulate ...
Space & Earth / Earth Sciences
Feb 01, 2010 |
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A Kinoform's Best Friend: Diamond Refractive Lenses for Nanofocusing
(PhysOrg.com) -- A team of Brookhaven and Argonne National Laboratory researchers has demonstrated a reliable path for sculpting an intricate x-ray focusing lens out of diamond. Their technique, which was ...
Aug 03, 2009 |
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Researchers study Terahertz radiation's impact on cellular function and gene expression
Terahertz (THz) technologies show promise for myriad medical, military, security, and research applications ranging from the detection of cancer to airport security systems to shipment inspection to spectroscopy. Relatively ...
Sep 13, 2011 |
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DNA repair mechanisms relocate in response to stress
Like doctors making house calls, some DNA repair enzymes can relocate to the part of the cell that needs their help, a collaborative team of scientists at Emory University School of Medicine has found.
Mar 26, 2009 |
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Space telescope's new survey of outer galaxy helps astronomers study stars
The Spitzer Space Telescope is now taking aim at the outer reaches of the Milky Way and helping two Iowa State University astronomers advance their star studies.
Aug 30, 2010 |
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Solar Probe Plus mission to plunge directly into Sun's atmosphere
NASA has begun development of a mission to visit and study the sun closer than ever before. The unprecedented project, named Solar Probe Plus, is slated to launch no later than 2018.
Space & Earth / Space Exploration
Sep 02, 2010 |
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