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Tag Archives: sonar

Sound cloak

By Stephen Ornes / April 14, 2013

Caption: This strange-looking cage can hide an object inside it from being detected by sound waves. Credit: L. Sanchis et al

New device hides objects from sonar

Posted in Physics, Technology & Engineering | Tagged acoustics, cloak, echo, getinvolved, Invisibility, José Sánchez-Dehesa, noise cancellation, noise cancelling, sonar, sound waves, submarines, topstories

No more bubble trouble

By Stephen Ornes / August 6, 2012

Bottlenose dolphins can tell the difference between noisy echoes bounced off of bubbles and other echoes, including those bounced off of prey. Now scientists have figured out a way to tell apart the noises, too. Credit: Emma Jugovich, NOAA

Dolphin’s clicks help scientists sort through confusing underwater noises

Posted in Physics | Tagged acoustics, animals, birds, bubbles, communications, dolphins, echoes, echolocation, engineering, getinvolved, Grant Deane, mammals, mathematics, nonlinear, physics, reptiles, reptiles/birds/mammals, Scripps Institution of Oceanography, sonar, sound, Timothy Leighton, University of Southampton

Underwater Racket

By Emily Sohn / February 2, 2011

As more ships traverse the oceans, the volume of sound traveling underwater is increasing. This change can affect humpback whales and other residents who use sound in their daily lives. (miblue5/iStock)

The oceans are getting louder, and scientists want to know what that means for marine residents

Posted in Environment & Pollution | Tagged beaching, birds, getinvolved, hearing, mammals, marine life, physics, reptiles, reptiles/birds/mammals, sonar, sound, sound pollution, waves, Whales