Talk:Negative refraction

How is that possible?

How is this possible? According to the video in this article, the wavepacket moves in the opposite direction to the small waves after the refraction; is that possible? If you leave an answer, please notify me on my talk page. —Kri (talk) 20:55, 24 July 2011 (UTC)

Out of date

This looks like it is out of date, please see:

"On the propagation of electromagnetic waves in isotropic media that are both electrically and magnetically dispersive" by B. K. P. Scaife

Citation: AIP Advances 7, 015018 (2017); doi:10.1063/1.4973869 View Table of Contents: http://aip.scitation.org/toc/adv/7/1 Published by the American Institute of Physics

Brendan Scaife shows that even if the material has both negative epsilon and negative permeability over a range of wavelengths it won’t exhibit negative refraction as is currently thought. He says that if the phenomenon were real then that could be due to spatial dependence of epsilon and mu (so these varying with position) but this theory has not been worked out (so far).

Last sentence in abstract: "No support is found for the possibility of negative refraction by materials with negative epsilon and mu, however it is found that such materials would display unusual refractive properties"

End of third last paragraph: "Rather than the negative refraction as suggested by Veselago, we have found that the surface of such a material behaves like a mirror for oblique incidence, but permits transmission at perpendicular, or normal, incidence."

— Preceding unsigned comment added by Donn300 (talk • contribs)

Negative Refraction?

Very funny. Longinus876 (talk) 03:47, 14 July 2023 (UTC)