Criteria for negative refraction in acti
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P. Kinsler; M. W. McCall
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Article
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2008
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John Wiley and Sons
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English
β 263 KB
## Abstract We review three commonly used conditions that characterize negative refraction in isotropic dielectricβmagnetic materials. We show that while all the different conditions are equivalent for passive media, they are distinct for different types of active media. Β© 2008 Wiley Periodicals, I