News tagged with amplitudes

Scientists discover new water waves

(PhysOrg.com) -- By precisely shaking a container of shallow water, researchers have observed wave behavior that has never been seen before. In a new study, Jean Rajchenbach, Alphonse Leroux, and Didier Clamond ...

Jul 19, 2011 feature
4.4 / 5 (21) 26 | with audio podcast

Tall water waves behave unexpectedly

(PhysOrg.com) -- In investigating the behavior of large-amplitude standing water waves, mathematician Jon Wilkening of the University of California, Berkeley, has discovered that the waves’ behavior cannot ...

Nov 15, 2011 feature
4.8 / 5 (18) 2 | with audio podcast

Scientists first to observe plasmons on graphene

With a beam of infrared light, scientists have sent ripples of electrons along the surface of graphene and demonstrated that they can control the length and height of these oscillations, called plasmons, using ...

Jun 20, 2012
4.6 / 5 (10) 5 | 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

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

Do dolphins use nonlinear mathematics?

Research from the University of Southampton, which examines how dolphins might process their sonar signals, could provide a new system for man-made sonar to detect targets, such as sea mines, in bubbly water.

Jul 18, 2012
4.8 / 5 (6) 6 | with audio podcast

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

Squeezed light from single atoms

(PhysOrg.com) -- Max Planck Institute of Quantum Optics scientists generate amplitude-squeezed light fields using single atoms trapped inside optical cavities.

Jun 30, 2011
4.6 / 5 (5) 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