Slow glass

The nickname slow glass refers to a Bose-Einstein condensate that slows the measured speed of light to mere meters per second. The name is based on that of a fictional material in the short story Light of Other Days, by Bob Shaw.

(Note: There was a much earlier reference to slow glass in "Unknown Worlds" Comics circa 1965, but without any reference to an Bose-Einstein condensate; It was merely a device to introduce stories from the distant past. The Unknown Worlds version of Slow Glass was capable of showing you vistas from MILLIONS of years in the past, the depth of the time window varied to suit the particular story they were about to introduce.)

External links

• Observation of Ultraslow Light Propagation in a Ruby Crystal at Room Temperature