Researchers invent a mobile guide for the blind

A research group at the University of Alicante has developed an application for smart phones designed for the blind to overcome aerial obstacles such as branches or awnings, which cannot be done with guide dogs or walking ...

Studying how flocculation affects acoustic reflection

In inland estuaries and shallow coastal waters, small particles of organic matter, such as organic waste and debris or bacteria, clump together to form an aggregate known as floc. Flocculated particles can span a range of ...

Ship noise boosts stress in whales, 9/11 reveals: study

The steady drone of motors along busy commercial shipping lanes not only alters whale behaviour but can affect the giant sea mammals physically by causing chronic stress, a study published Wednesday has reported for the first ...

Sensor predicts glass breakage

(PhysOrg.com) -- Modern glass façades inform the architecture of major cities throughout the world. In recent years, however, there have been cases of broken glass, with collapsing facades endangering passers-by. Now, a ...

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 ...

I'm forever imploding bubbles

The National Physical Laboratory (NPL) has developed the first sensor capable of measuring localized ultrasonic cavitation - the implosion of bubbles in a liquid when a high frequency sound wave is applied. The sensor will ...

DEIMOS joins MARS and its satellite of instruments on seafloor

The planet Mars has a moon named Deimos, so it seems only appropriate that the ocean observatory MARS in Monterey Bay have its own DEIMOS. This DEIMOS, however, is an underwater acoustic package designed to monitor movements ...

Underwater acoustic localization of marine mammals and vehicles

Researchers at IMDEA Networks (Spain) in collaboration with University of Haifa (Israel) have developed an underwater acoustic system for the localization of marine mammals, underwater vehicles and other sound sources in ...

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