News tagged with light rays
SLAC X-ray laser used to probe biomolecules to individual atoms
An international team led by SLAC National Accelerator Laboratory has proved how the world's most powerful X-ray laser can assist in cracking the structures of biomolecules, and in the processes helped to ...
May 31, 2012 |
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Astrophysicists discover new heating source in cosmological structure formation
(Phys.org) -- So far, astrophysicists thought that super-massive black holes can only influence their immediate surroundings. A collaboration of scientists at the Heidelberg Institute for Theoretical Studies ...
May 15, 2012 |
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A supernova cocoon breakthrough
(Phys.org) -- Observations with NASA's Chandra X-ray Observatory have provided the first X-ray evidence of a supernova shock wave breaking through a cocoon of gas surrounding the star that exploded. This discovery ...
May 15, 2012 |
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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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Resurfacing urban areas to offset 150 billion tons of carbon dioxide
Imagine a world where the rooftops and pavements of every urban area are resurfaced to increase the reflection of the Sun's light rays. Well, this is exactly what a group of Canadian researchers have done ...
Apr 12, 2012 |
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How nitric acid overcame its fear of water with a little help from its friends
Whether it is a pond or raindrop, when a common nitrogen-containing acid encounters water's surface, it typically falls apart, dissociating into two charged particles. Except, sometimes it is able to hold ...
Mar 14, 2012 |
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Making sharper X-rays
A variety of imaging technologies rely on light with short wavelengths because it allows very small structures to be resolved. However, light sources which produce short, extreme ultraviolet or x-ray wavelengths ...
Mar 09, 2012 |
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Spin-orbit sum rule to speed up X-ray scattering research
A new theory developed by Prof Gerrit van der Laan, from the Science & Technology Facilities Council (STFC) and Diamond Light Source, and published this week in the journal Physical Review Letters, provid ...
Feb 15, 2012 |
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Researchers at SLAC test collider closer to creating fully coherent X-rays
(PhysOrg.com) -- Many advanced laser technologies, such as laser spectroscopy, that use precise wavelengths of infrared, visible or ultraviolet laser light could benefit from using X-ray light as well. But ...
Feb 01, 2012 |
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First atomic X-ray laser created
Scientists working at the U.S. Department of Energy's (DOE) SLAC National Accelerator Laboratory have created the shortest, purest X-ray laser pulses ever achieved, fulfilling a 45-year-old prediction and ...
Jan 25, 2012 |
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Cosmic particle accelerators get things going
(PhysOrg.com) -- ESA's Cluster satellites have discovered that cosmic particle accelerators are more efficient than previously thought. The discovery has revealed the initial stages of acceleration for the ...
Nov 17, 2011 |
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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 |
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Erasing history? Temporal cloaks adjust light's throttle to hide an event in time
Researchers from Cornell University in Ithaca, N.Y., have demonstrated for the first time that it's possible to cloak a singular event in time, creating what has been described as a "history editor." In a feat of Einstein-inspired ...
Oct 12, 2011 |
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Suspects in the quenching of star formation exonerated
Supermassive black holes millions to billions times the mass of our Sun lie at the heart of most, maybe all large galaxies. Some of these power brilliantly luminous, rapidly growing objects called active galactic nuclei that ...
Oct 11, 2011 |
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Space telescopes reveal secrets of turbulent black hole
(PhysOrg.com) -- A fleet of spacecraft including NASA's Hubble Space Telescope has uncovered unprecedented details in the surroundings of a supermassive black hole. Observations reveal huge bullets of gas ...
Sep 29, 2011 |
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