Nonuniqueness of "Real ray" equations when the ray direction is complex
- 1 January 1977
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in Proceedings of the IEEE
- Vol. 65 (11) , 1599-1601
- https://doi.org/10.1109/PROC.1977.10772
Abstract
When the ray direction at a point is complex, there is no real direction in which the gradient of the wave vector k is uniquely determined by the value of k at the point. This contrasts with the ease in which the ray direction is real. A geometric proof of the result is presented.Keywords
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