News tagged with amplitudes

The pink noise of water quality

Lakes and streams are an essential supply of freshwater. Monitoring their water quality relies on measuring their chemistry. Researchers from ETH Zürich and the British research institute CEH have discovered ...

Aug 12, 2013
4.7 / 5 (7) 0 | with audio podcast

Carbon nanotubes for molecular magnetic resonances

Researchers at ICFO have developed a new technique for measuring very weak forces on a molecular scale. Thanks to the use of carbon nanotubes, they have achieved the highest level of sensitivity to date. These results published ...

Jun 09, 2013
3.7 / 5 (3) 0 | with audio podcast

Hair sensor uncovers hidden signals

An "artificial cricket hair" used as a sensitive flow sensor has difficulty detecting weak, low-frequency signals – they tend to be drowned out by noise. But now, a bit of clever tinkering with the flexibility ...

Jun 06, 2013
5 / 5 (3) 0 | with audio podcast

How do cold ions slide

Things not always run smoothly. It may happen, actually, that when an object slides on another, the advancement may occur through a 'stop and go' series in the characteristic manner which scientists call ...

May 23, 2013
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Clamorous city blackbirds

(Phys.org)—Animals have developed a variety of strategies for dealing with increasing noise pollution in their habitats. It is known, for example, that many urban birds sing at a high pitch to differentiate ...

Jan 11, 2013
4.3 / 5 (3) 0 | with audio podcast

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

Jumping to reduce vibrations

A pioneering use of mini-trampolines is allowing engineers to better understand effects of vibrations caused by human movement on floors and small bridges. 

Nov 16, 2012
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