Comment Not Likely Headline: Physics Works as Expected!!! (Score 1) 429
It is an incorrect assumption of path that leads to claims of superluminal propagation with prisms. Evanescent fields (non-propagating fields) give everyone headaches and now headlines. But the claims were debunked in 2001.
Check out: http://utol.ecen.ceat.okstate.edu/papers/paper70.p df
or
http://utol.ecen.ceat.okstate.edu/papers/paper66.p df