Things not always run smoothly. It may happen, actually, that when an object slides on another, the advancement may occur through a 'stop and go' series in the characteristic manner which scientists call ...
May 23, 2013
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(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
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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
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A pioneering use of mini-trampolines is allowing engineers to better understand effects of vibrations caused by human movement on floors and small bridges.
Nov 16, 2012
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(Phys.org)—A team of physicists working in a lab at Free University of Berlin have succeeded in causing a quartz cantilever to oscillate uniformly using the random vibrations of a single hydrogen molecule. ...
Nov 14, 2012
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Dusty plasmas can be found in many places both in space and in the laboratory. Due to their special properties, dust acoustic waves can propagate inside these plasmas like sound waves in air, and can be studied with the naked ...
Oct 16, 2012
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(Phys.org)—In spite of its name, the time reversal of a wave doesn't involve sending the wave back in time, but for scientists, the process is almost as compelling. After a source generates a wave, the ...
Aug 23, 2012
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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
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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
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Researchers working with NASA's Mercury Surface, Space Environment, Geochemistry, and Ranging (MESSENGER) spacecraft report the frequent detections of Kelvin-Helmholtz (KH) waves at the edge of the innermost ...
May 15, 2012
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NEC Corporation introduced today the latest breakthrough in capacity performance of microwave radio systems used in mobile backhaul and other types of networking applications. NEC will implement 2048 Quadrature Amplitude ...
Feb 28, 2012
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(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
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(PhysOrg.com) -- Scientists have demonstrated that a superconducting detector called a transition edge sensor (TES) is capable of counting the number of as many as 1,000 photons in a single pulse of light ...
Nov 14, 2011
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(PhysOrg.com) -- A new study in Austria has confirmed that spiders are extremely sensitive to vibrations, and determined they are the second most vibration-sensitive organism, topped only by cockroaches.
Oct 28, 2011
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In a paper published this week in Science, researchers at Brown University and from the Republic of Georgia have learned how bats can home in on a target, while nearly instantaneously taking account of and ...
Jul 28, 2011
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