News tagged with sound wave
Newly developed cloak hides underwater objects from sonar
In one University of Illinois lab, invisibility is a matter of now you hear it, now you don't.
Jan 05, 2011 |
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A sonic boom in the world of lasers
It was an idea born out of curiosity in the physics lab, but now a new type of ‘laser’ for generating ultra-high frequency sound waves instead of light has taken a major step towards becoming a unique and highly useful 21st ...
Jun 17, 2009 |
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Plasmonic Promises: First Observation of Plasmarons in Graphene
(PhysOrg.com) -- The energy bands of complex particles known as plasmarons have been seen for the first time by scientists working with graphene at the Advanced Light Source. Their discovery may hasten the ...
May 20, 2010 |
4.9 / 5 (21) |
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Coke cans focus sound waves beyond the diffraction limit
(PhysOrg.com) -- When trying to focus sound waves into as small an area as possible, scientists run into a fundamental limit called the diffraction limit. That is, when sound waves are focused into a region ...
Jul 12, 2011 |
4.7 / 5 (20) |
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First hyperlens for sound waves created
Ultrasound and underwater sonar devices could "see" a big improvement thanks to development of the world's first acoustic hyperlens. Created by researchers with the U.S. Department of Energy's Lawrence Berkeley ...
Oct 25, 2009 |
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Scientists first to trap light and sound vibrations together in nanocrystal
(PhysOrg.com) -- Researchers at the California Institute of Technology have created a nanoscale crystal device that, for the first time, allows scientists to confine both light and sound vibrations in the ...
Oct 26, 2009 |
4.5 / 5 (19) |
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Sound bullets could treat cancers and replace ultrasound (w/ Video)
(PhysOrg.com) -- Acoustic devices are used in a range of applications such as ultrasound scanners, but their performance is limited for some uses by their inaccurate focusing and low focal power. Now a group ...
Apr 07, 2010 |
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When dark energy turned on (Update)
(PhysOrg.com) -- Some six billion light years distant, almost halfway from now back to the big bang, the universe was undergoing an elemental change. Held back until then by the mutual gravitational attraction ...
Mar 30, 2012 |
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Physicists localize 3-D matter waves for first time (w/ video)
University of Illinois physicists have experimentally demonstrated for the first time how three-dimensional conduction is affected by the defects that plague materials. Understanding these effects is important ...
Oct 07, 2011 |
4.9 / 5 (15) |
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Dutch PhD student develops device to combat noise
Johan Wesselink of the University of Twente, The Netherlands, has developed a device to actively combat noise nuisance. This invention curtails sound waves and vibrations by producing anti-noise. The researcher is confident ...
Dec 01, 2009 |
3.9 / 5 (17) |
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Radio astronomers develop new technique for studying dark energy
Pioneering observations with the National Science Foundation's giant Robert C. Byrd Green Bank Telescope (GBT) have given astronomers a new tool for mapping large cosmic structures. The new tool promises to ...
Jul 21, 2010 |
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Sound creates light: German researchers transfer ultra-stable frequency across a 480-km-long optical fiber link
German researchers at the Physikalisch-Technische Bundesanstalt have found an elegant solution to transmit an optical frequency with extreme precision: they employ fiber Brillouin amplification. The new method ...
Jun 23, 2010 |
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Distant star's sound waves reveal cycle similar to the Sun's
In a bid to unlock longstanding mysteries of the Sun, including the impacts on Earth of its 11-year cycle, an international team of scientists has successfully probed a distant star. By monitoring the star's ...
Aug 26, 2010 |
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New flat flexible speakers might even help you catch planes and trains
(PhysOrg.com) -- A groundbreaking new loudspeaker, less than 0.25mm thick, has been developed by University of Warwick engineers, it's flat, flexible, could be hung on a wall like a picture, and its particular ...
Apr 01, 2009 |
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Technology strikes a chord with algal biofuels
An award-winning Los Alamos National Laboratory sound-wave technology is helping Solix Biofuels, Inc. optimize production of algae-based fuel in a cost-effective, scalable, and environmentally benign fashion—paving the way ...
Technology / Energy & Green Tech
Sep 03, 2009 |
4.6 / 5 (10) |
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