News tagged with sound
Lenses can bend light and sound in almost any direction
(PhysOrg.com) -- When an optical fiber is bent by 90° or more, the light begins to leak away, posing a problem for fiber optics communications. But by using special lenses that can bend light by not only ...
Apr 02, 2012 |
4.2 / 5 (12) |
17
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Tiny Music Player Made from Wire Bridge (w/ Video)
(PhysOrg.com) -- In 2008, scientists built a loudspeaker made of carbon nanotubes that produced sound and music based on the thermoacoustic effect. Now, a different team of scientists has built a loudspeaker ...
Nov 04, 2009 |
4.2 / 5 (18) |
1
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 / 5 (19) |
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Electron's negativity cut in half by supercomputer
(PhysOrg.com) -- While physicists at the Large Hadron Collider smash together thousands of protons and other particles to see what matter is made of, they're never going to hurl electrons at each other. No ...
Jan 12, 2012 |
4.2 / 5 (26) |
36
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Earth's outer core deprived of oxygen: study
The composition of the Earth's core remains a mystery. Scientists know that the liquid outer core consists mainly of iron, but it is believed that small amounts of some other elements are present as well. Oxygen ...
Space & Earth / Earth Sciences
Nov 23, 2011 |
3.3 / 5 (10) |
12
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'Sound of Football' project allows blind to play football (w/ video)
(PhysOrg.com) -- In a show of just how far Smartphone technology has come, a new group funded by the Pepsi Refresh Project, has put together various technologies that allow blind people to play football using ...
Technology / Computer Sciences
Nov 11, 2011 |
5 / 5 (5) |
2
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Earthquakes generate big heat in super-small areas: study
Most earthquakes that are seen, heard, and felt around the world are caused by fast slip on faults. While the earthquake rupture itself can travel on a fault as fast as the speed of sound or better, the fault ...
Space & Earth / Earth Sciences
Oct 13, 2011 |
4.5 / 5 (4) |
2
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Physicists localize 3-D matter waves for first time (w/ video)
University of Illinois physicists have experimentally demonstrated for the first time how three-dimensional conduction is affected by the defects that plague materials. Understanding these effects is important ...
Oct 07, 2011 |
4.9 / 5 (15) |
6
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DARPA releases video of HTV-2 hypersonic glider flight
An unmanned glider streaks over the Pacific Ocean at 20 times the speed of sound in a video released Thursday by a U.S. defense research agency experimenting with technology that could give the military the ...
Aug 25, 2011 |
4 / 5 (24) |
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Nanoplasmonic 'whispering gallery' breaks emission time record in semiconductors
Renaissance architects demonstrated their understanding of geometry and physics when they built whispering galleries into their cathedrals. These circular chambers were designed to amplify and direct sound ...
Nanotechnology / Nanomaterials
Jul 22, 2011 |
4 / 5 (4) |
1
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Coke cans focus sound waves beyond the diffraction limit
(PhysOrg.com) -- When trying to focus sound waves into as small an area as possible, scientists run into a fundamental limit called the diffraction limit. That is, when sound waves are focused into a region ...
Jul 12, 2011 |
4.7 / 5 (20) |
27
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Scientists drag light by slowing it to speed of sound
(PhysOrg.com) -- Scientists at the University of Glasgow have, for the first time, been able to drag light by slowing it down to the speed of sound and sending it through a rotating crystal.
Jul 06, 2011 |
4.7 / 5 (27) |
43
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Scientists find odd twist in slow 'earthquakes': Tremor running backwards
Earthquake scientists trying to unravel the mysteries of an unfelt, weeks-long seismic phenomenon called episodic tremor and slip have discovered a strange twist. The tremor can suddenly reverse direction ...
Space & Earth / Earth Sciences
May 22, 2011 |
4.8 / 5 (9) |
2
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Squid shown to be able to hear
(PhysOrg.com) -- Scientists in the US have solved the mystery about whether squid can hear and if so, how.
Feb 08, 2011 |
4.9 / 5 (11) |
15
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Newly developed cloak hides underwater objects from sonar
In one University of Illinois lab, invisibility is a matter of now you hear it, now you don't.
Jan 05, 2011 |
4.8 / 5 (30) |
27
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Sound
Sound is a travelling wave which is an oscillation of pressure transmitted through a solid, liquid, or gas, composed of frequencies within the range of hearing and of a level sufficiently strong to be heard, or the sensation stimulated in organs of hearing by such vibrations.
For more information about Sound, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
