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Old 04-06-2012, 12:08 AM
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MonsieurM MonsieurM is offline
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I think you might like this this info ...remember Anisotropy

Lenses can bend light and sound in almost any direction

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(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 90, but also 180 (i.e., a U-turn) or 360 (i.e., a full loop), scientists may limit light leakage in optical fibers and overcome this problem, not to mention provide a useful material for many other applications. Recently, a team of scientists has theoretically investigated materials for achieving this kind of advanced light control, which could work equally well for sound waves.


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The scientists, Sebastien Guenneau and coauthors from Institut Fresnel, CNRS, University of Aix-Marseille in Marseille, France, have published their study on the focusing and bending of light and sound waves in a recent issue of the New Journal of Physics.

As Guenneau explained, both light and sound control techniques use gradient index (GRIN) lenses, which can effectively be used to curve space for light and sound trajectories. By creating a change, or gradient, in the refractive index of a lens, the scientists could create anisotropies that is, make the lens' refractive index directionally dependent.
doesn't remind you of: ( Principle of Correspondence )







images taken from : Sacred Geometry

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Gravitational lens - Wikipedia, the free encyclopedia

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Spacetime around a massive object (such as a galaxy cluster or a black hole) is curved, and as a result light rays from a background source (such as a galaxy) propagating through spacetime are bent. The lensing effect can magnify and distort the image of the background source.
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Unlike an optical lens, maximum 'bending' occurs closest to, and minimum 'bending' furthest from, the center of a gravitational lens. Consequently, a gravitational lens has no single focal point, but a focal line instead. If the (light) source, the massive lensing object, and the observer lie in a straight line, the original light source will appear as a ring around the massive lensing object. If there is any misalignment the observer will see an arc segment instead


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Last edited by MonsieurM; 04-06-2012 at 01:04 AM.
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