News tagged with sound wave

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: ...

3 hours ago
5 / 5 (2) 0

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.

Jan 05, 2015
4.8 / 5 (15) 1

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 ...

Dec 11, 2014
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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.

Dec 04, 2014
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Tomorrow's tablets? Look, no hands

Engineers in a suburban Chicago office complex have designed a new microphone that they say will be key to the future of smartphone and tablet technology because it gives consumers the ability to operate hand-held devices ...

Oct 24, 2014
4.3 / 5 (12) 0

How to find a submarine

Das Boot, The Hunt for Red October, The Bedford Incident, We Dive At Dawn: films based on submariners' experience reflect the tense and unusual nature of undersea warfare – where it is often not how well ...

Oct 23, 2014
4.5 / 5 (4) 1

Finding hints of gravitational waves in the stars

Scientists have shown how gravitational waves—invisible ripples in the fabric of space and time that propagate through the universe—might be "seen" by looking at the stars. The new model proposes that ...

Sep 22, 2014
4.8 / 5 (24) 15