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"Everything should be as simple as it is, but not simpler", Albert Einstein
Browsing All Posts filed under »waves«
Music in Terms of Science
James Q. Feng To many people, music is a mystery. It is uniquely human, because no other species produces elaborate, well organized sound for no particular reason. It has been part of every known civilization on earth. It has become a very part of man’s need to impose his will upon the universe, to bring […]
How To Steer Sound Using Light
July 16, 2012
The ability to create phonons and then steer them using laser beams could lead to a new generation of applications, say physicists Zap an optical fibre with a couple of laser beams and the resulting interference pattern causes an interesting effect–it squeezes the material, an effect known as electrostriction. This creates a compression wave called […]
2011 Japan Tsunami Wave Height…
March 12, 2012
….the First 22 Hours Scientists have known for years that the shape of the seafloor plays a role in how tsunami waves build up as they approach the coastline. Underwater topography also determines why some areas get hit worse than others. This animation shows the first 22 hours (120 second time resolution) of the wave’s […]
Hearing the Japanese Earthquake
March 8, 2012
Le séisme au Japon retranscrit en ondes sonores AUDIO – Des chercheurs de l’université de Georgia Tech ont converti sous forme audio les ondes sismiques enregistrées au large de Fukushima. Écouter le terrible bruit du séisme de Fukushima tel qu’il a été au plus près de la côte japonaise et ses répercussions ailleurs dans le […]
Proposed Cloaking Device for Water Waves Could Protect Ships at Sea
March 3, 2012
The weird science of invisibility has entered uncharted waters. By altering the sea floor in just the right way, it should be possible to hide an object floating on the sea from passing waves, a fluid mechanician predicts. The technique might help to protect ships and floating structures from rough seas. And because the scheme […]
Teaching Waves with Google Earth
January 4, 2012
Fabrizio Logiurato Google Earth is a huge source of interesting illustrations of various natural phenomena. It can represent a valuable tool for science education, not only for teaching geography and geology, but also physics. Here we suggest that Google Earth can be used for introducing in an attractive way the physics of waves… Read more: arxiv.org/pdf
Amazing visualization of a solar magnetic storm
December 1, 2011
20 Hz: A Semiconductor work by Ruth Jarman and Joe Gerhardt. Audio Data courtesy of CARISMA, operated by the University of Alberta, funded by the Canadian Space Agency. Special Thanks to Andy Kale. Made for the exhibition Invisible Fields at Arts Santa Monica in Barcelona Spain. lighthouse.org.uk/programme/invisible-fields 20 Hz observes a geo-magnetic storm occurring in the […]
Cloak could hide ships from flowing water
July 21, 2011
Ships of the future may be able to move through the water without a creating a wake. That is according to a pair of physicists in the US, who have proposed a new type of material that lets water flow around an object as if it were not there at all. The design, which has […]
Soft-drink cans beat the diffraction limit
July 11, 2011
To focus sound to a point, all you need is a thirst for fizzy drinks. Jon Cartwright Sound, like light, can be tricky to manipulate on small scales. Try to focus it to a point much smaller than one wavelength and the waves bend uncontrollably — a phenomenon known as the diffraction limit. But now, […]
September 27, 2012
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