News tagged with radiation physics
The new world of gamma-ray optics
Scientists discover that certain materials like silicon or gold exhibit a surprisingly large refractive index for extremely high energetic gamma-rays.
May 14, 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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Detection of cosmic effect may bring universe's formation into sharper focus
(PhysOrg.com) -- The first observation of a cosmic effect theorized 40 years ago could provide astronomers with a more precise tool for understanding the forces behind the universe's formation and growth, ...
Mar 20, 2012 |
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Building a better light bulb
Scientists study the movement of charge carriers to design an organic LED that is energy efficient and still casts a warm, natural glow.
Feb 01, 2012 |
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Astronomers solve mystery of vanishing energetic electrons in Earth's outer radiation belt
UCLA researchers have explained the puzzling disappearing act of energetic electrons in Earth's outer radiation belt, using data collected from a fleet of orbiting spacecraft.
Jan 29, 2012 |
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Physicists propose test for loop quantum gravity
(PhysOrg.com) -- As a quantum theory of gravity, loop quantum gravity could potentially solve one of the biggest problems in physics: reconciling general relativity and quantum mechanics. But like all tentative ...
Jan 03, 2012 |
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Using radiation to sterilize insect pests may protect California fruits and vegetables
A new study published in the Journal of Economic Entomology shows that radiation can be used to effectively sterilize the light brown apple moth (LBAM), an insect pest found in Australia, New Zealand, California, Hawaii, Sweden ...
Nov 30, 2011 |
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Nobel Prize-winning physicist Norman Ramsey dies
(AP) -- Norman Ramsey, who shared the 1989 Nobel Prize in physics for his research into molecules and atoms that led to the creation of the atomic clock, has died in Massachusetts. He was 96.
Nov 07, 2011 |
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Researchers find world's first x-ray laser produces most coherent x-ray radiation ever
(PhysOrg.com) -- The world's first x-ray laser, the Linac Coherent Light Source (LCLS), first unveiled in 2009 at the Stanford Linear Accelerator Center in Palo Alto California, has been undergoing testing ...
Oct 03, 2011 |
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Researchers realize high-power, narrowband terahertz source at room temperature
Researchers at Northwestern University have developed a simpler way to generate single-chip terahertz radiation, a discovery that could soon allow for more rapid security screening, border protection, high sensitivity biological/chemical ...
Sep 30, 2011 |
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Rebalancing the nuclear debate through education
Better physics teaching with a particular emphasis on radioactivity and radiation science could improve public awareness through education of the environmental benefits and relative safety of nuclear power generation, according ...
Sep 09, 2011 |
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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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Applying particle physics expertise to cancer therapy
(PhysOrg.com) -- Physicists at the University of California, Santa Cruz, are working with medical researchers at Loma Linda University Medical Center to develop a new imaging technology to guide proton therapy ...
May 13, 2011 |
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Another universe tugging on ours? Maybe not, researchers say
(PhysOrg.com) -- A new study from the University at Buffalo contradicts the dark flow theory, showing that exploding stars in different parts of the universe do not appear to be moving in sync. Working with ...
Apr 14, 2011 |
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Chemists develop technique to use light to predict molecular crystal structures
A Syracuse University chemist has developed a way to use very low frequency light waves to study the weak forces (London dispersion forces) that hold molecules together in a crystal. This fundamental research could be applied ...
Mar 23, 2011 |
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