News tagged with sound waves

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Dutch PhD student develops device to combat noise

Johan Wesselink of the University of Twente, The Netherlands, has developed a device to actively combat noise nuisance. This invention curtails sound waves and vibrations by producing anti-noise. The researcher is confident ...

Dec 01, 2009
3.9 / 5 (17) 17

A sonic boom in the world of lasers

It was an idea born out of curiosity in the physics lab, but now a new type of ‘laser’ for generating ultra-high frequency sound waves instead of light has taken a major step towards becoming a unique and highly useful ...

Jun 17, 2009
4.8 / 5 (23) 6

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

Laser physics upside down

At the Vienna University of Technology a system of coupled lasers has been created which exhibits truly paradoxical behaviour: An increase in energy supply switches the lasers off, reducing the energy can ...

Jul 15, 2014
4.8 / 5 (4) 1