News tagged with sound waves

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When dark energy turned on (Update)

(PhysOrg.com) -- Some six billion light years distant, almost halfway from now back to the big bang, the universe was undergoing an elemental change. Held back until then by the mutual gravitational attraction ...

Mar 30, 2012
4.1 / 5 (20) 67 | with audio podcast

First hyperlens for sound waves created

Ultrasound and underwater sonar devices could "see" a big improvement thanks to development of the world's first acoustic hyperlens. Created by researchers with the U.S. Department of Energy's Lawrence Berkeley ...

Oct 25, 2009
4.6 / 5 (19) 4

Acoustic tweezers can position tiny objects

(PhysOrg.com) -- Manipulating tiny objects like single cells or nanosized beads often requires relatively large, unwieldy equipment, but now a system that uses sound as a tiny tweezers can be small enough ...

Aug 28, 2009
4.9 / 5 (9) 1

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

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) 14

The sound of an atom has been captured

Researchers at Chalmers University of Technology are first to show the use of sound to communicate with an artificial atom. They can thereby demonstrate phenomena from quantum physics with sound taking on ...

Sep 11, 2014
4 / 5 (14) 3