Acoustic Waves Current Events | Acoustic Waves News
|
| Page
1 of
21 |
418 Results |
|
|
|
Sort By:
Page Views | Date |
'Invisibility cloaks' could break sound barriers
Contrary to earlier predictions, Duke University engineers have found that a three-dimensional sound cloak is possible, at least in theory. view more (2008-01-10)
Mountain winds may create atmospheric hotspots
Rapidly fluctuating wind gusts blowing over mountains and hills can create "hotspots" high in the atmosphere and significantly affect regional air temperatures. view more (2005-10-18)
Visualizing atomic-scale acoustic wavesin nanostructures
Acoustic waves play many everyday roles - from communication between people to ultrasound imaging. Now the highest frequency acoustic waves in materials, with nearly atomic-scale wavelengths, promise to be useful probes of nanostructures such as LED lights. view more (2008-07-07)
New phenomenon in physics discovered on illumination of metal surfaces
Scientific research at the Centre of the Physics of Materials, a mixed venture of the Higher Council for Scientific Research (CSIC) and the University of the Basque Country (UPV/EHU) in Donostia-San Sebastian, has enabled the discovery of a new physical phenomenon that affects the surfaces of illuminated metals. view more (2007-07-12)
Shifting sound to light may lead to better computer chips
By reversing a process that converts electrical signals into sounds heard out of a cell phone, researchers may have a new tool to enhance the way computer chips, LEDs and transistors are built. view more (2009-03-17)
First acoustic metamaterial 'superlens' created by U. of I. researchers
A team of researchers at the University of Illinois has created the world's first acoustic "superlens," an innovation that could have practical implications for high-resolution ultrasound imaging, non-destructive structural testing of buildings and bridges, and novel underwater stealth technology. view more (2009-06-25)
Seismic research without artificial source
Researchers at TU Delft have made progress in the theoretical foundation of a special subsoil imaging technique. This technique could be used to chart underground mineral resources, it is called "acoustic daylight imaging". The method uses natural acoustic signals, already present in the earth, to create an image of the subsurface... view more... (2004-12-21)
Berkeley researchers create first hyperlens for sound waves
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 National Laboratory (Berkeley Lab), the acoustic hyperlens provides an eightfold boost in the magnification power of sound-based... view more... (2009-10-26)
Micro honeycomb materials enable new physics in aicraft sound reduction
Noise from commercial and military jet aircraft causes environmental problems for communities near airports, obliging airplanes to follow often complex noise-abatement procedures on takeoff and landing. It can also make aircraft interiors excessively loud. view more (2008-09-30)
Singing in the rainforest: Public vs. private signaling by a tropical rainforest bird
According to the Chinese proverb, a bird sings because it has a song, not because it has an answer. A team of French and Brazilian researchers, however, may have the answer as to how the song of Brazilian white-browed warbler has become so well-adapted to the acoustic properties of the rainforest environment. view more (2008-02-13)
Disorder enables extreme sensitivity in piezoelectric materials
A research team working at the National Institute of Standards and Technology (NIST) has found an explanation for the extreme sensitivity to mechanical pressure or voltage of a special class of solid materials called relaxors. view more (2008-05-19)
NJIT professor's research suggests changes in underwater data communications
An NJIT professor, who has discovered new communication channels in underwater environments and invented a technique to communicate data through these channels, will be honored later this month by the New Jersey Inventors Hall of Fame. view more (2008-10-15)
Acoustic noise contains valuable information
The proper processing of acoustic noise can provide a wealth of information. Geophysicists have used seismic background noise measurements to reconstruct the crustal structure under Southern California. view more (2006-12-08)
Archive Trawl Gives Bison Three Decades Of Solar Music
Scientists in Birmingham have scoured the archives and put together a complete archive of helioseismic data for nearly three solar cycles. The results from reprocessing the data will shed light on the link between helioseismology, the study of sound waves resonating within the Sun, and solar activity. Dr Graham Verner will be presenting... view more... (2005-03-30)
Seats Helped Ancient Greeks Hear From Back Row
As the ancient Greeks were placing the last few stones on the magnificent theater at Epidaurus in the fourth century B.C., they couldn't have known that they had unwittingly created a sophisticated acoustic filter. view more (2007-04-05)
Lasers Generate Underwater Sound
Scientists at the Naval Research Laboratory are developing a new technology for use in underwater acoustics. The new technology uses flashes of laser light to remotely create underwater sound. view more (2009-09-08)
Guam rhino beetles got rhythm
In May 2008 the island of Guam became a living laboratory for scientists as they attached acoustic equipment to coconut trees in order to listen for rhinoceros beetles. view more (2009-04-14)
Astrophysicists Listen to Loops Shivering on the Sun
You would imagine that a 500,000 kilometre long arch of super heated plasma releasing energy equal to the simultaneous explosion of 40 billion Hiroshima atomic bombs would be as easy to "hear" as it is to "see" - but it's not. Astrophysicists have long thought about using the acoustic waves in these flares to understand more... view more... (2004-02-17)
APS Podcast Updates Research on Elephant Seismic Communication
Caitlin O'Connell-Rodwell's insight that elephants 'talk' and 'listen' to vocalizations that they send through the ground grew from long hours of observation and experimentation, as well as her own in-depth knowledge of insects that communicate seismically. view more (2009-09-21)
Making monster waves
Rogue waves-giant waves that spring up suddenly and tower over the seas around them-have inspired physicists to look for an analogue in light. view more (2009-10-20)
|
|
| Page
1 of
21 |
418 Results |
|
|
|
Sort By:
Page Views | Date |
|
