News tagged with acoustic

A layer of tiny grains can slow sound waves

In some ways, granular material—such as a pile of sand—can behave much like a crystal, with its close-packed grains mimicking the precise, orderly arrangement of crystalline atoms. Now researchers at ...

Aug 05, 2013
5 / 5 (2) 2 | with audio podcast

Perfect Pitch: Language Wins Out Over Genetics

Mozart, Tchaikovsky, Sinatra and Hendrix -- these and many other of the world's most famous musicians have had "perfect" or "absolute" pitch. The ability, defined as recognizing the pitch of a musical note ...

May 19, 2009
4.1 / 5 (9) 4

Sound bullets in water

Sound waves are commonly used in applications ranging from ultrasound imaging to hyperthermia therapy, in which high temperatures are induced, for example, in tumors to destroy them. In 2010, researchers at Caltech led by ...

Nov 19, 2012
5 / 5 (9) 0 | with audio podcast

A more stealthy robot may be hearing you soon

(PhysOrg.com) -- Stealth is a trait that few of us posses naturally. Most of us are really kind of obvious as we walk down the street or sashay through the halls of the office. That is why people who are trying ...

Mar 23, 2011 weblog
3.4 / 5 (5) 4 | with audio podcast