Response to “Comment on: On the inapplicability of a negative-phase-velocity condition as a negative-refraction condition for active materials”

A distinction exists between negative phase velocity and negative refraction for linear isotropic dielectric-magnetic materials, active or passive. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 1681, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25290