News tagged with acoustic

Croaking chorus of Cuban frogs make noisy new neighbors

Human-produced noises from sources such as traffic and trains can substantially impact animals, affecting their ability to communicate, hunt, or even survive. But can the noise made by another animal have the same detrimental ...

May 31, 2013
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When a whistle beats a tweet

Biologists have discovered that a species of Australian pigeon has a secret way of alerting fellow birds to predators -- a "whistle" emitted by flapping wings when the bird takes off in alarm.

Sep 01, 2009
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Flying Telescope Passes Key Test

Most astronomers wouldn't dream of opening their observatory's doors in 100 mph winds. Yet NASA's new SOFIA telescope recently flew in an airplane at 250 mph with doors wide open.

Jan 08, 2010
4.7 / 5 (6) 3 | with audio podcast

Acoustic waves warn of tsunami

An early warning system against tsunamis has been developed and tailored for the need of the Mediterranean, but preparedness on the ground is paramount to ensuring peoples' safety.

Aug 29, 2013
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Beneath the Arctic polar cap

(Phys.org) —The Arctic polar cap has been melting at an astonishing rate over the past 20 or so years. In addition to causing higher sea levels and other environmental impacts, the decreasing surface is ...

Jun 12, 2014
3 / 5 (2) 0

Sensors for the real world

Over the last decade there has been an increased interest in developing resonators for gravitmetric sensing; however, the sensors' response to variations in temperature has prevented them from being used outside the laboratory. ...

Nov 05, 2012
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Researchers invent a mobile guide for the blind

A research group at the University of Alicante has developed an application for smart phones designed for the blind to overcome aerial obstacles such as branches or awnings, which cannot be done with guide ...

Jul 12, 2013
5 / 5 (1) 0