Light's most exotic trick yet: So fast it goes ... backwards?

[Doug]

"In the past few years, scientists have found ways to make light go both faster and slower than its usual speed limit, but now researchers at the University of Rochester published a paper on May 12 in Science on how they've gone one step further: pushing light into reverse. As if to defy common sense, the backward-moving pulse of light travels faster than light.
Confused? You're not alone. ................................... ." read the full article at http://www.spaceflightnow.com/news/n0605/14light/
So it seems that 'C' is not an absolute.

Doug

[robagar]

a pulse of light is not the same as light itself. Its like the spot of light you see when a lighthouse beam hits a cloud. If the cloud is far enough away, it can appear to move faster than the speed of light.

But,

• the light itself is not going any faster, and
• no information is transferred

c still rules.

[josh (Luke)]

Doug
I was just starting to get the hang of all this light stuff... But now..ill be back

[ving (David)]

yup, light moving faster than light... makes perfect sense

[Doug]

If a pulse of light 1 nanosecond duration were studied from a time frame of 10to the-3 picoseconds, would that pulse not be a solid beam of light
relatve-itly speaking

best,
Doug