Hello JohnH,
An interesting article. If I remember my university lecturer correctly, the group velocity can exceed the speed of light but this is only artificial as the phase velocity is less than it. Maybe I got that around the wrong way, but I'm trying to remember back 29 years ago.
Anyway, I never really believed this fact about Physics and the speed of light.
Doesn't everybody know that Captain James T Kirk has been zooming all over the universe at warp speeds since the 1960's.
No, seriously, there are many things that we all know little about in the universe. I'm certain that this is one of them. Many events in life would change if this were so, fundamentally, that people in inertial frames of reference could tell if they were moving without looking outside of the reference frame. For instance, their reflection in a mirror could disappear. These are things that fundamentally cannot occur, else the universe would appear very different to us. Anyway, all scientific research needs to be evaluated and checked by others. I'm prepared to keep an open mind on the subject and await any developments with interest. Other scientists should be able to replicate the results if the data is valid. I find it amazing to grasp how these scientists can measure a time interval this small over a distance of 3ft. This equates to being able to measure times as small as 3 x 10(power)-7 seconds. Till I have verification from other scientists, I'll save my faster than the speed of light thoughts for science fiction.
