منابع مشابه
Refraction at the Interface of a Lossy Metamaterial
The refraction phenomenon at the interface of an ordinary material and a lossy metamaterial has been investigated. For oblique incidence on the lossy metamaterial, the planes of constant amplitude of the refracted wave are parallel to the interface and the plane of constant phases make a real angle with the interface (real refraction angle). The real refraction angle and hence, the real refract...
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Accurate modelling and simulation of ship motion in seaway is essential to test applications of ship motion control strategies. In this report, we review the mathematical description of ocean waves, and their effect on the motion of marine vehicles. We present a simple method suitable for accurate simulation that incorporates parameters related to the recommended spectral family and particular ...
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An investigation of the optimal short-range routing of a vessel in a stationary random seaway is presented. The calculations are performed not only in head seas but also in oblique waves. The evaluation of the added drag is performed by computing the time average wave force acting on the vessel in the longitudinal direction. Subsequently, the added drag is superimposed on the steady drag experi...
متن کاملAtmospheric refraction: a history.
We trace the history of atmospheric refraction from the ancient Greeks up to the time of Kepler. The concept that the atmosphere could refract light entered Western science in the second century B.C. Ptolemy, 300 years later, produced the first clearly defined atmospheric model, containing air of uniform density up to a sharp upper transition to the ether, at which the refraction occurred. Alha...
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S MAA SEAWAY FALL MEETING SUNY PLATTSBURGH, 2010 Friday night speaker Andrew Granville, University of Montreal The anatomy of integers and permutations Different mathematical subjects have different basic objects -for example, integers for numbers, permutations in combinatorics and group theory. At first sight these objects come from such different worlds that they seem to have very little in c...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research
سال: 2008
ISSN: 0148-0227
DOI: 10.1029/2008jc004748