Sound travels as waves, which continue to bounce off surfaces like walls and ceilings. These reflected waves or reverberations interfere with the original sound. This noise or acoustic reverberation makes it harder for us ...
Engineering
Jul 11, 2013
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0
(PhysOrg.com) -- Unmanned aerial vehicles (UAVs) are playing increasingly important roles in many fields. Ranging in size from the huge Global Hawk aircraft to hand-held machines, these remotely controlled devices are growing ...
Engineering
Jan 22, 2009
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0
(PhysOrg.com) -- Over the past decade, researchers have developed a variety of reliable real-time and archival instruments to study sounds made or heard by marine mammals and fish. These new sensors are now being used in ...
Ecology
Dec 29, 2009
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A team of researchers from the University of Exeter and Piazza Leonardo da Vinci, has shown, theoretically, that corkscrew elastic waves carry well-defined orbital angular momentum. In their paper published in the journal ...
A collaborative of Russian researchers has mathematically modelled diamond-based microstructures for producing compact, high-sensitivity sensors.
General Physics
Jun 22, 2016
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35
Researchers from North Carolina State University have developed a technique that allows ultrasound to penetrate bone or metal, using customized structures that offset the distortion usually caused by these so-called "aberrating ...
General Physics
Nov 20, 2014
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Scientists at the Vienna University of Technology (TU Vienna) have developed a method to steer waves on precisely defined trajectories, without any loss. This way, sound waves could be sent directly to a target, avoiding ...
General Physics
Apr 4, 2011
1
0
On November 18 scientists from the US National Science Foundation's National Solar Observatory predicted the arrival of a large sunspot just in time for Thanksgiving. Using a special technique called helioseismology, the ...
Space Exploration
Nov 24, 2020
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138
University of Oregon physicists have developed a new method to manipulate sound—stop it, reverse it, store it and even use it later—in synthetic composite structures known as metamaterials.
General Physics
Apr 16, 2021
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72
Researchers have detected the rolling movement of a nano-acoustic wave predicted by the famous physicist and Nobel prize winner Lord Rayleigh in 1885. This phenomenon can find applications in acoustic quantum technologies ...
General Physics
Jul 29, 2021
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