We know that there is sound on planets and moons in the solar system – places where there's a medium through which sound waves can be transmitted, such as an atmosphere or an ocean. But what about empty space? You may have ...
Space Exploration
Nov 24, 2016
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40
Researchers have known for decades that whales create elaborate songs, sometimes projecting their calls for miles underwater. A new study from the Woods Hole Oceanographic Institution (WHOI), however, has revealed a previously ...
Plants & Animals
Nov 2, 2016
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614
Research Triangle engineers have developed a simple, energy-efficient way to create three-dimensional acoustic holograms. The technique could revolutionize applications ranging from home stereo systems to medical ultrasound ...
General Physics
Oct 14, 2016
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1375
Unlike drugs, active implants such as electroceuticals act locally, have fewer side effects and function directly through electrical signals, much like the body itself. At the Medica 2016 trade fair in Düsseldorf, Fraunhofer ...
Engineering
Oct 4, 2016
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0
Sound can now be structured in three dimensions. Researchers from the Max Planck Institute for Intelligent Systems and the University of Stuttgart have found a way of generating acoustic holograms, which could improve ultrasound ...
General Physics
Sep 22, 2016
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308
On February 18, 2015, an explosion rattled the ExxonMobil refinery in Torrance, causing ground shaking equivalent to that of a magnitude-2.0 earthquake and blasting out an air pressure wave similar to a sonic boom.
Earth Sciences
Jul 1, 2016
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13
It's a dry heat, Phoenix residents like to say about Arizona's hot weather. That bravado may vanish as the thermometer flirts with 120 degrees this weekend.
Environment
Jun 17, 2016
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123
The unique properties of metamaterials have been used to cloak objects from light, and to hide them from vibration, pressure waves and heat. Now, a Georgia Institute of Technology researcher wants to add another use for metamaterials: ...
General Physics
Mar 2, 2016
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566
Acoustic-gravity waves are very long sound waves that cut through the deep ocean at the speed of sound. These lightning-quick currents can sweep up water, nutrients, salts, and any other particles in their wake, at any water ...
General Physics
Feb 29, 2016
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77
This image shows the galaxy Messier 94, which lies in the small northern constellation of the Hunting Dogs, about 16 million light-years away.
Astronomy
Oct 26, 2015
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73
