News tagged with sound waves

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Weighing gas with sound and microwaves

NIST scientists have developed a novel method to rapidly and accurately calibrate gas flow meters, such as those used to measure natural gas flowing in pipelines, by applying a fundamental physical principle: When a sound ...

dateJan 26, 2015 in Engineering
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Acoustic levitation made simple

A team of researchers at the University of São Paulo in Brazil has developed a new levitation device that can hover a tiny object with more control than any instrument that has come before.

dateJan 05, 2015 in General Physics
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How birds get by without external ears

Unlike mammals, birds have no external ears. The outer ears of mammals play an important function in that they help the animal identify sounds coming from different elevations. But birds are also able to perceive whether ...

dateDec 11, 2014 in Plants & Animals
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When noise gets electrons moving

Studying the motion of electrons in a disordered environment is no simple task. Often, understanding such effects requires a quantum simulator designed to expose them in a different physical setup.

dateDec 04, 2014 in General Physics
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