Leepaidamba wrote:I read this in "Experiment NL: deel 2", a (Dutch) publication of the NWO (Dutch Organisation for Scientific Research) and popular-scientific magazine Quest containing short articles about scientific discoveries made in the Netherlands. The article this came from was written by Gieljan de Vries and describes how Professor Kobus Kuipers of the FOM-Institute for Atomic and Molecular Physics in Amsterdam slowed down light and measured it.
However you can easily find information about this through googling "Slow light". The references of the Wikipedia page on the subject also provide valuable information. This for instance states that light has been slowed down to about 38 Mi/h.
It's exactly what I thought. They didn't slow photons at all. They slowed a beam of light. It's nothing more than a more extreme version of what happens when light moves from air into water. The beam of light slows because photons get absorbed and re-radiated. This effect delays the progression of the overall beam of light, but the individual photons never travel any slower.