Usual positive phase and group refraction for Pim-Pim.

This is the familiar positive refraction. Note how the front crosses the surface in such a way that Snell's law is satsfied. No part of the front stops or goes at odd speeds.
The next movie shows how a front can never cross from PIM to NIM so as to satisfy a negative Snell's law.

Back NIM Home Movies References LHM Publicity Next

For contact and comments, email to
© 2002 CEMD, University of Texas at Austin. All rights reserved.