News tagged with acoustic

Now in broadband: Acoustic imaging of the ocean

( -- Researchers at Woods Hole Oceanographic Institution (WHOI) have developed two advanced broadband acoustic systems that they believe could represent the acoustic equivalent of the leap from black-and-white ...

dateApr 01, 2010 in Engineering
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How noise pollution is changing animal behaviour

Noise pollution, generally an unintended byproduct of urbanisation, transport and industry, is a key characteristic of human development and population growth. In some cases, it is produced intentionally, for example when ...

dateDec 18, 2015 in Ecology
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Caltech researchers create 'sound bullets'

Taking inspiration from a popular executive toy ("Newton's cradle"), researchers at the California Institute of Technology have built a device -- called a nonlinear acoustic lens -- that produces highly focused, high-amplitude ...

dateApr 21, 2010 in General Physics
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Making frequency-hopping radios practical

The way in which radio spectrum is currently allocated to different wireless technologies can lead to gross inefficiencies. In some regions, for instance, the frequencies used by cellphones can be desperately congested, while ...

dateMay 15, 2013 in Semiconductors
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Building a Moebius strip of good vibrations

Yale physicists have created something similar to a Moebius strip of moving energy between two vibrating objects, opening the door to novel forms of control over waves in acoustics, laser optics, and quantum mechanics.

dateJul 25, 2016 in General Physics
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